Published by Actually Sleeping · Reviewed by Dr. Samantha Abrahamson, PharmD · Review policy · Updated 2026-11-10

Newborn sleep in the first 4 weeks: what’s normal, what’s hard, and when to call the pediatrician

In the first 4 weeks, sleep comes in short pieces spread across day and night. HealthyChildren says newborns sleep about 16 to 17 hours a day, often only 1 or 2 hours at a time, and healthy babies vary widely. There is no official sleep target at this age. Feed on cue, keep every sleep safe, and call the pediatrician for fever, poor feeding or unusual sleepiness.

What is normal in the first month

A newborn has no working body clock yet. The AAP notes that babies do not have regular sleep cycles until about 4 months, so sleep lands evenly across 24 hours and night is not yet different from day.

Newborn sleep is about half active (REM) sleep, according to the AAP. Grunting, twitching, eye movements and short cries during sleep are common and do not always mean your baby is awake. The AAP also describes periodic breathing: pauses of 5 to 10 seconds followed by a burst of faster breathing. It is generally considered normal and is outgrown by about the middle of the first year.

Measure	What the sources say
Official hours target	None. The American Academy of Sleep Medicine (AASM) makes no recommendation under 4 months because normal sleep varies so widely and evidence on health outcomes is insufficient.
Total sleep	About 16 to 17 hours a day (HealthyChildren). A review of observational studies found an average of 14.6 hours at 0 to 2 months, with a normal spread of about 9 to 20 hours.
Length of a stretch	Often only 1 or 2 hours at a time (HealthyChildren).
Pattern	None yet. Day sleep and night sleep look the same.

These first weeks are about feeding, safety and recovery, not schedules. Many parents still want someone in their corner from the start. Actually Sleeping works with families from the newborn stage: Dr. Sam writes a plan around your baby’s feeds and your household, foundations first, with every feed your pediatrician wants left in place.

What parents find hardest

Day–night mix-up. With no body clock yet, night is not different from day. The AAP describes the contrast babies need: normal, bright days and dark, quiet nights with contact limited to basic care.
Sleeping only on you. Very common now. Contact naps are fine while you are awake and alert. When you get drowsy, move your baby to their own flat, empty sleep space.
Evening fussiness. The AAP says about one in five babies develop colic, usually between the second and fourth weeks, and the fussy period tends to fall between 6 p.m. and midnight.
Your own exhaustion. This is where the riskiest sleep happens. The AAP warns that sleeping with a baby on a couch or armchair raises the risk of a sleep-related death up to 67 times. If you think you might doze while feeding, do not sit on the sofa.

Safe sleep from the first night

On the back for every sleep, naps included. The AAP says the side position is just as dangerous as the stomach.
A firm, flat surface with a fitted sheet and nothing else. Crib bumpers and inclined sleepers (more than 10 degrees) have been banned products under federal law since November 12, 2022.
Share a room, not a bed. The AAP says sharing a sleep surface raises risk 5 to 10 times when a baby is under 4 months.
If your baby falls asleep in a car seat, swing or carrier, move them to a flat sleep surface on their back as soon as you can.
If you swaddle, always place your baby on the back, keep the hips loose, avoid overheating, and never use weighted swaddles. No hat indoors once you are home.

Night feeds

Newborns eat around the clock. How often to feed, whether to wake a sleepy baby to eat, and when a longer stretch is fine are decisions for your pediatrician, based on your baby’s weight gain. Nothing on this page is a reason to cut a feed.

When to call the pediatrician

A rectal temperature of 100.4°F (38°C) or higher in a baby 3 months or younger. The AAP says to call immediately, even without other symptoms.
Your baby is hard to wake for feeds, feeds poorly, or seems floppy or unusually sleepy.
Breathing that stops for more than 20 seconds: the AAP says call 911.
Crying that seems like pain or illness, or you feel low and unable to cope. The AAP asks parents to tell their doctor about both.

What you can start now

Foundations can start now. What they should look like depends on your baby’s feeding, temperament and how your nights actually run, which is why Actually Sleeping builds them into a plan written for your baby rather than a generic checklist, with daily 1:1 check-ins while it settles. Night feeds are never forced out, and feeding decisions stay with your pediatrician. The 14-day guarantee clock starts at your baby’s 10-week birthday: We guarantee that your baby will sleep 8–12 hours through the night within 14 days of consistent, correct implementation of your sleep plan. Parents of newborns describe their experience on our newborn reviews page. For more on this stage, see the newborn sleep rhythm and how infant sleep cycles develop. To talk through your baby’s first weeks, book a free consultation with Dr. Sam.

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Frequently asked

How many hours should a newborn sleep?

There is no official target. The AASM makes no recommendation under 4 months because normal sleep varies so widely. HealthyChildren says newborns sleep about 16 to 17 hours a day, and a review of studies found healthy babies at 0 to 2 months anywhere from about 9 to 20 hours.

Is it normal for my newborn to grunt and twitch while asleep?

Yes. About half of newborn sleep is active sleep, when grunts, twitches and brief cries are common. Short breathing pauses of 5 to 10 seconds followed by faster breathing are also described as normal by the AAP. Pauses longer than 20 seconds need a 911 call.

Can my newborn sleep in the swing or car seat?

Not for routine sleep. The AAP says sitting devices such as car seats, swings and strollers are not recommended for routine sleep, especially under 4 months. If your baby dozes off in one, move them to a firm, flat surface on their back as soon as possible.