Newborn Sleep, 0 to 3 Months
Newborns sleep 14 to 17 hours a day in short chunks, wake every 2 to 4 hours to feed, and have no circadian rhythm for the first 6 to 8 weeks. Frequent waking is normal and protective — it is not a sleep problem, it is a newborn. Focus on safe sleep, feeding, and short 45 to 60 minute wake windows. Nothing to train, nothing to fix.
Safe sleep first, always
Before anything else, the American Academy of Pediatrics (AAP) safe sleep guidance for babies under 12 months. These practices reduce the risk of sudden infant death syndrome (SIDS) and sleep-related infant death.
- Back to sleep, every sleep, for every nap and every night, until baby's first birthday.
- Firm, flat, non-inclined sleep surface in a safety-approved crib, bassinet, or play yard.
- Nothing else in the sleep space. No pillows, blankets, bumpers, toys, wedges, or positioners.
- Room-share without bed-sharing for at least the first 6 months, ideally 12 months.
- Bedsharing is not recommended by the AAP. If a caregiver may fall asleep while feeding, do it on a firm adult bed cleared of pillows and soft bedding, then return baby to their own sleep space.
- Offer a pacifier at nap and bedtime once breastfeeding is established.
- Avoid overheating. Dress baby in one more layer than an adult would wear comfortably in the same room.
- No smoking, vaping, alcohol, or unprescribed drugs during pregnancy or around baby.
Source: American Academy of Pediatrics, 2022 policy statement on safe sleep. See our interactive safe sleep checklist for a printable version.
Definition
The newborn period is 0 to about 12 weeks. Sleep is disorganized, driven by hunger and comfort rather than a schedule. The day/night cycle emerges gradually, usually locking in between 8 and 12 weeks.
What it looks like in practice
1. Wakes every 2 to 3 hours all night
Normal. Newborn stomachs are small and breastmilk digests fast. Frequent waking also helps prevent extended deep sleep, which is protective against SIDS.
2. Only sleeps on you
Also normal. Contact sleep for newborns is developmentally appropriate. It is not a habit that will ruin sleep later.
3. Day/night confusion
Common until 6 to 8 weeks. Bright natural light and normal activity during the day, dim quiet at night, gradually helps circadian rhythm lock in.
Research and outcomes
Circadian rhythm develops from 6 to 12 weeks postnatally, driven by melatonin production coming online (Mirmiran). Frequent night waking is a feature of infant sleep architecture, not a bug (Ball, McKenna). AAP 2022 safe sleep guidance strongly recommends back sleeping, firm flat non-inclined surface, and room-sharing without bed-sharing for at least 6 months.
Frequently asked questions
This page is part of the sleep pillar.
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