Newborn sleep, weeks 0 to 4: what’s typical, what’s tough, and when to call the pediatrician

Normal sleep in month one

Newborns don’t have a functioning body clock yet. As the AAP points out, regular sleep cycles don’t appear until about 4 months, so sleep is spread evenly over the 24 hours and night isn’t yet distinct from day.

The AAP says that roughly half of a newborn’s sleep is active (REM) sleep. Grunts, twitches, eye movements and brief cries during sleep are common and don’t necessarily mean your baby has woken up. The AAP also describes periodic breathing — pauses of 5 to 10 seconds, then a burst of quicker breaths. This is generally regarded as normal, and babies grow out of it by around the middle of the first year.

These early weeks revolve around feeding, safety and recovery, not schedules. Even so, lots of parents want someone on their side from day one. Actually Sleeping works with families from the newborn stage: Dr. Sam writes a plan built around your baby’s feeds and your household, starting with foundations. How night feeds are handled depends on your baby’s age and is set in your custom plan.

What parents struggle with most

• Days and nights mixed up. Without a body clock, night feels no different from day. The AAP describes the contrast babies need: ordinary, bright days and dark, quiet nights where interaction is kept to basic care.
• Only sleeping on you. This is very common at this stage. Contact naps are fine as long as you are awake and alert. Once you start feeling drowsy, move your baby to their own flat, empty sleep space.
• Fussy evenings. According to the AAP, about one in five babies develop colic, usually somewhere between the second and fourth weeks, and the fussy stretch tends to land between 6 p.m. and midnight.
• Your own exhaustion. This is when the most dangerous sleep situations arise. The AAP warns that sleeping with a baby on a couch or armchair increases the risk of a sleep-related death by up to 67 times. If there’s a chance you’ll nod off during a feed, don’t sit on the sofa.

Safe sleep starting on night one

• Back to sleep for every sleep, including naps. The AAP says sleeping on the side is just as dangerous as sleeping on the stomach.
• A firm, flat surface with a fitted sheet and nothing more. Under federal law, crib bumpers and inclined sleepers (more than 10 degrees) have been banned products since November 12, 2022.
• Share your room, but not your bed. The AAP says that sharing a sleep surface raises risk 5 to 10 times for a baby under 4 months.
• If your baby nods off in a car seat, swing or carrier, transfer them onto their back on a flat sleep surface as soon as you’re able.
• If you swaddle, always lay your baby on their back, leave the hips loose, avoid overheating, and never use a weighted swaddle. Skip the hat indoors once you’re home.

About night feeds

Newborns feed around the clock. How often to feed, whether to wake a drowsy baby for a feed, and when a longer stretch is OK are all decisions for your pediatrician to make based on your baby’s weight gain. Nothing on this page should be taken as a reason to drop a feed.

When to call your pediatrician

• A rectal temperature of 100.4°F (38°C) or above in a baby aged 3 months or younger. The AAP says to call right away, even if there are no other symptoms.
• Your baby is difficult to wake for feeds, isn’t feeding well, or seems floppy or unusually sleepy.
• Breathing that stops for longer than 20 seconds: the AAP says to call 911.
• Crying that sounds like pain or illness, or you’re feeling low and unable to cope. The AAP asks parents to let their doctor know about either.

What you can begin now

You can start on foundations now. Exactly what they look like depends on your baby’s feeding, temperament and how your nights really go — which is why Actually Sleeping builds them into a plan written for your baby instead of a generic checklist, with daily 1:1 check-ins while things settle. How night feeds are handled depends on your baby’s age and is set in your custom plan. The 14-day guarantee clock begins 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. Newborn parents share their experience on our newborn reviews page. To learn more about this stage, read about the newborn sleep rhythm and how infant sleep cycles develop. If you’d like to talk through your baby’s first weeks, book a free consultation with Dr. Sam.