A–Z Baby Sleep Problems to Solve For More Restful Nights
Baby sleep problems can feel like they come out of nowhere. Your baby was taking great naps, and suddenly they’re only 30 minutes long. Bedtime used to be easy, and now it’s a battle. Or maybe your baby has started waking for an hour in the middle of the night when they used to sleep soundly.
The tricky part is that there isn’t always one obvious reason for a sleep disruption, and it doesn’t always resolve itself after a few nights. This guide breaks down some of the most common baby sleep problems and challenges. Use it to better understand your newborn, baby, or toddler who won’t sleep and where to start when you’re ready to make a change.
A — Attachment & Sleep Associations
Based on the routines that happen before sleep, babies develop associations with what happens before they fall asleep. These associations become what they rely on to fall asleep. When they get a certain cue, they know it’s time for bed.
Examples of sleep associations:
Sleep associations are neither bad nor good. They either work for the family or they don't. When your baby relies on an association to fall asleep that isn't sustainable, it's time to introduce independent sleep cues and reduce the hands-on settling support.
B — Bedtime Battles
Bedtime battles can leave everyone frustrated, especially when your baby or toddler seems determined to do anything except sleep.
Battles can happen when your child is:
Overtired
Undertired
Going through changes (school, new sibling, moving house)
Pushing boundaries (that’s toddler 101)
Isn't ready for the transition to sleep
Assessing bedtime and nap schedules is a good starting point. Make sure naps and wake windows are appropriate for their age, then create a predictable bedtime routine that gives your child clear signals that sleep is coming. Consistency can help bedtime become less of a negotiation.
C — Circadian Rhythm
Everyone has an internal body clock that regulates their wake and sleep cycles; however, newborns don’t develop this until after the first few weeks of life. It develops within the first 8-9 weeks of life, meaning in those early weeks, they can’t regulate when they feel awake and when they feel sleepy.
Use simple routines to help prevent day-and-night confusion.
Get plenty of natural light during the day
Keep daytime activities bright and engaging
Keep some naps unswaddled
Make nighttime dark, quiet, and boring
Consistent wake times, sleep routines, morning rise, and bedtime hour can also help strengthen those day-and-night cues.
D — Daylight Saving Time (Fall Back)
Your baby's body doesn't automatically adjust when the clock does, so staying on schedule can be tricky. Do your best to stick to your normal nap and bedtimes, even if the first few days feel off.
You can try keeping them awake longer by doing some of their favorite activities, giving them an extra snack, or even taking a mid-day bath just for fun. Within a few days, your baby’s body will sync back up.
E — Early Morning Wakings
Early rising is when a baby or toddler habitually wakes before 6 AM. Sleep pressure is lighter in the early morning, so babies wake more easily during this part of the night if conditions aren't optimal.
Early wakings can be influenced by:
Sleep timing (early naps, suboptimal bedtime)
Sleep pressure (too much daytime sleep or overtiredness)
An established habit of starting the day early
Light entering the room
Hunger
Nap transitions
Illness
To help with early morning wakings, it’s important to evaluate the entire 24-hour schedule. If early morning wakings keep you from a restful night’s sleep, I’m happy to look at your routines with you.
F — False Starts
A false start happens when your baby falls asleep at bedtime but struggles to stay asleep in that first stretch of sleep (15 to 90 minutes). It might seem like they’re ready to start the evening over. It can be frustrating because it feels like the whole bedtime routine you just did didn't stick.
False starts are common when you support a baby to sleep with feeding, rocking, or holding. Sleep training is usually the solution.
That said, false starts can also come from a sleep pressure imbalance. Look at the timing of the final nap of the day and the length of your baby's last wake window. If the baby is either overtired or hasn't built enough sleep pressure before bed, a false start is more likely. Adjusting the schedule and establishing an independent sleep routine will help.
G — Growth Spurts
Growth spurts can temporarily disrupt sleep because your baby's needs are changing.
Growth spurts happen around these ages:
You may notice increased hunger, more frequent night wakings, or changes in your baby's usual sleep pattern. Make sure they're getting enough daytime nutrition so you don't revert to night feedings.
Your baby will return to their usual self and routine quickly.
H — Hunger & Night Feedings
Hunger will cause babies to wake at night, especially during the newborn stage when frequent feeding is expected.
As babies grow and can take in more calories during the day, nighttime feeds become unnecessary, but that doesn't mean every baby will stop waking to eat at the same age.
The challenge for parents is figuring out whether their baby is waking because they're genuinely hungry or because they've developed a habit or association around feeding to fall back asleep.
Start by looking at your baby's:
Age
Milk feeds during the day (contentment or breastfed babies, and ounces for formula-fed babies
Weight gain/growth chart
What feeds look like overnight (emptying breast or bottle versus snacking)
For younger babies or babies with specific feeding needs, always prioritize their nutritional needs and talk with their pediatrician before intentionally reducing nighttime feeds.
If your baby is old enough (typically 4-5 months) that you and your pediatrician feel comfortable reducing nighttime feeds, you can gradually work toward longer stretches between feedings while making sure they're getting enough nutrition during the day.
I — Illness
Even a baby who normally sleeps well can have a rough night when they're sick. Congestion, coughing, fever, an upset stomach, or general discomfort can make it difficult for them to fall asleep and stay asleep. Your baby will want more comfort and reassurance than usual, which can temporarily change their normal sleep habits.
When your baby is sick, focus on comfort and recovery. You don’t need to maintain perfect sleep habits. Offer extra reassurance, keep them comfortable, and follow your pediatrician's guidance for managing their symptoms.
Once they're feeling better, return to your normal bedtime routine and sleep expectations. A few disrupted nights during an illness don't mean you've undone your baby's sleep progress.
J — Jet Lag
Travel can throw off your baby's sleep schedule through time-zone changes, unfamiliar surroundings, missed naps, and changes to their normal routine. Even babies who typically sleep well can have a few rough nights while traveling.
While you’re traveling, bring familiar sleep cues whenever possible, such as the same:
Portable white noise
Bedtime routine
Blanket or lovey
Once you arrive, use local daylight and mealtimes to help your baby's body adjust to the new schedule. Don't worry about achieving a perfect schedule while traveling. Focus on maintaining the most important pieces of your routine.
K — Knees & Crawling
When babies learn new physical skills like crawling, pulling up, or standing, they may want to practice those skills at bedtime or during the night. Your baby might wake up and start moving around in the crib instead of going back to sleep, even if nothing else about their routine has changed.
Let them practice crawling, sitting up and down, and standing up and back down in the crib during the daytime so they can feel comfortable with the motions and the novelty wears off. Keep your response to nighttime wake-ups calm and boring, and continue following your usual sleep routine.
These developmental disruptions are temporary, so consistency can help your baby settle back into their normal sleep patterns.
L — Light in Their Room
Light is one of the strongest environmental signals for your baby's circadian rhythm. Morning light signals daytime, while darkness is a friend to sleep. Too much morning sunlight can make it harder for your baby to stay asleep and can cause early morning wakes.
Keep your baby's sleep environment as dark as you can, especially during naps and early morning hours. Expose your baby to plenty of natural light during the day and dim the lights as bedtime approaches. If your baby wakes overnight, use red lighting and keep interactions calm to reinforce that it’s time to sleep.
M — Moving From a Crib
Moving from a crib to a toddler bed gives your child a new level of freedom, which can make bedtime suddenly much more complicated. A child who previously stayed in bed can now get up, explore, or repeatedly ask for you.
When is it time to move your toddler out of the crib?
Climbing out (an issue of safety rather than readiness)
Good sleep habits in place
Ideally after age 3
Prepare your child for the transition by talking about what bedtime will look like with the big kid bed, including what they can do and what you will do if (when) your child tests those new boundaries. The biggest mistake is parents hyping up the big kid bed without talking about the expectations and then enforcing them. That's huge! Parents need to say what they mean and mean what they say.
N — Nightmares & Night Terrors
Nightmares and night terrors can be alarming for parents and kids alike, but how you respond to them is different. Nightmares may cause a child to wake frightened and seek comfort, while night terrors can involve crying, screaming, or appearing distressed while the child is still asleep.
For nightmares, keep the interaction calm and brief. Gently guide them back to bed after offering reassurance and comfort. During a night terror, focus on keeping your child safe until they fall back asleep rather than trying to wake them up. If episodes are frequent, unusually intense, or creating safety concerns, talk with your child's pediatrician.
O — Overtiredness
When babies stay awake longer than they can comfortably handle, they become tired and have a harder time settling down. Overtired babies may fight sleep, take short naps, wake frequently, or seem unusually fussy.
Pay attention to your baby's age, wake windows, and sleepy cues to make sure you offer sleep at the right time. If your baby is regularly becoming tired, look at the entire daytime schedule rather than moving bedtime earlier once in a while. Consistent nap opportunities will help prevent the cycle from continuing.
P — Pacifier Dependency
Pacifiers, and the non-nutritive sucking that occurs when babies use one, regulate the child's nervous system and can become a very cozy and beloved part of their sleep routine. Pacifiers are helpful for both daytime fussiness and settling to sleep.
For babies under six months of age who can't yet replace the pacifier on their own, the pacifier can become unsustainable if baby requires parents to replace throughout the night. For other babies, this isn't much of a problem and the pacifier works well for everyone!
When to say goodbye to the pacifier comes down to parental preference and is guided by recommendations from pediatric dentists and sometimes speech-language pathologists. A baby or toddler who has used it as a primary source of settling to sleep will need support as they adjust to new ways of settling.
Q — Quality of Sleep
Quality sleep is largely uninterrupted for adults and babies alike. While partial arousals and transitioning through sleep cycles are a healthy and productive measure of sleep, how this happens matters for the family's well-being.
Babies who have learned independent sleep skills can easily settle themselves back to sleep by mumbling a bit, finding their lovey, or getting into their favorite position. Parents don’t wake up for this.
For babies who rely on rocking, feeding, or holding, these partial arousals become longer and more complicated to get the baby back to sleep. Everyone loses sleep.
R — Sleep Regressions
Sleep regressions are periods when a baby who previously slept well suddenly wakes more, resists naps, or struggles at bedtime.
Babies are constantly changing, evolving, and growing, and their sleep mirrors that. When they learn to roll, crawl, stand up, or walk, you may notice some changes in sleep.
The same is true for starting daycare or meeting a new sibling, which they may have big feelings about. And remember, bedtime is a separation, so your little one might regress in their happiness about separating at bedtime from time to time. It’s developmentally appropriate!
Your baby’s entire sleep routine doesn’t need to change during a sleep regression. Look at what's changed developmentally and make sure their schedule still fits their current sleep needs. Otherwise, stick with the status quo so they can feel secure in the boundaries, which is often what gets things right back on track!
The 4-month regression is associated with major changes in infant sleep patterns, while the 8–10-month period coincides with developmental milestones and increased separation anxiety.
S — Split Nights
A split night is when your baby wakes for a prolonged period in the middle of the night and seems ready to hang out. This can be especially exhausting because your baby may stay awake for an hour or more while the rest of the house tries to sleep.
There is likely an imbalance between daytime sleep and nighttime sleep. Too much daytime sleep or not enough sleep pressure before bed can contribute to wakefulness at night. Solve this problem at the root by evaluating your baby's overall schedule.
T — Transitions
Babies and toddlers go through several nap transitions as their sleep needs change.
Common Nap Transitions:
3 to 2 naps: Longer wake windows make the third nap unnecessary.
2 to 1 nap: The morning nap gradually shifts toward one midday nap.
1 to 0 naps: Quiet time can replace the nap while bedtime may temporarily move earlier.
Look for consistent signs that your child is actually ready before dropping a nap. Adjust wake windows and use earlier bedtimes when needed during the transition. Give your child time to adapt. The new schedule won’t work perfectly on the first day.
Some other transitions that may disrupt sleep are:
Moving from crib to toddler bed
Travel
U — Unpredictable Sleep
Baby sleep isn't always predictable, even with a solid routine. Illness, teething, gross motor milestones, travel, growth spurts, and changes in sleep needs can all temporarily disrupt sleep.
One difficult night doesn’t call for an entire schedule change. Look for patterns and ask yourself what changed. Once you identify the cause, you can make a targeted adjustment.
V — Vacations
Sleeping somewhere unfamiliar can be hard for babies used to a specific room and routine. Travel can also mean a schedule that looks different from home.
Prioritize sleep when you can, but don't stress about maintaining a perfect schedule while you're away. When you return home, go back to your usual routine. Enjoy your quality family time on vacation.
W — Wake Windows
When wake windows are too short, your baby won't have enough sleep pressure to nap or fall asleep at bedtime. When they're too long, your baby becomes tired and may have a harder time settling or staying asleep.
After five months of age, wake windows should not run the show. Instead, a clock-based schedule with naps happening around the same time will encourage long naps and easier nights.
X — eXcessive Sleep
Parents worry about their baby not getting enough sleep, but too much daytime sleep can create problems, too. A baby who sleeps for long stretches during the day may not have enough sleep pressure at bedtime or overnight.
Look at your baby's total sleep over a full 24-hour period rather than focusing on one nap or one night. If they consistently get more daytime sleep than they need, gradually adjusting nap timing or duration can shift more sleep to nighttime.
Make changes based on your baby's age and individual sleep needs, not just because naps are long.
Y — Your Baby's Sleep Environment
Your baby's sleep environment can make it easier or harder to stay asleep. Light, noise, temperature, clothing, and other environmental factors can cause disruptions.
Create a sleep environment that's dark, cool, and consistent. Use appropriate sleepwear and follow safe sleep recommendations for your baby's age.
If your baby is waking early in the morning, consider whether light coming in or a wet diaper is bothering them.
Z — Zero Naps
Eventually, every toddler reaches the point where they no longer need a daytime nap. The tricky part is figuring out when they're truly ready. Dropping the nap too early can lead to a cranky toddler, while keeping a nap they no longer need can make bedtime impossible.
Look for consistent signs that your toddler can comfortably make it through the day without sleeping. Replace the nap with quiet time so they still have an opportunity to rest. You can move bedtime earlier while your toddler adjusts to their new no-nap schedule.
Every Sleep Problem Has a Root Cause
Sleep problems are normal. They are solvable, fixable, and something you are capable of navigating!
Take it from my client John:
“Being our first daughter, without family around to help, we were apprehensive, but Ella put us at ease straight away. Winnie loved her, and we had some much-needed sleep throughout our first six weeks! Ella also gave us great tips around feeding schedules, sleeping habits, and more that the pediatricians hadn’t given us, and we can’t recommend her highly enough!”
Once you understand what’s behind your baby’s sleep struggles, you can make consistent changes that help your baby get the sleep they need and make bedtime feel easier for everyone.
Overcome these sleep challenges by reaching out for some support.
Hi, I'm Ella Grace!
Pediatric Sleep Specialist for NYC Families
Sleep training is not about "teaching" your child independent sleep skills. It's about allowing your child to gain confidence falling asleep in a new way with your support and encouragement.
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