The question "what sleep routine should my baby have?" gets asked approximately 2 million times per month by new parents in the US — and the honest answer changes every 4 to 8 weeks for the first year of life. What works at 6 weeks does not work at 4 months. What works at 4 months needs adjusting at 6 months. And just when you think you have found something stable, a developmental leap or sleep regression arrives to scramble everything again.
This guide gives you the age-specific framework that underlies all good sleep routines — wake windows, total sleep targets, nap counts, bedtime windows, and what routine elements to add or drop at each stage. We also reference AAP safe-sleep guidelines at every stage, because routine consistency and safe sleep setup work together, not independently.
Why Baby Sleep Routines Change So Frequently
A baby's sleep architecture at birth is fundamentally different from adult sleep — and from what it will be at 6 months. Newborns spend up to 50% of their sleep time in active (REM-like) sleep versus about 20% for adults. They have no circadian rhythm at birth; melatonin production is minimal and irregular until 6 to 8 weeks, and does not become truly cyclic until 3 to 4 months. This means "routines" in the newborn period are about building associations and preventing overtiredness — not about aligning to a clock.
As circadian rhythms develop, as night/day differences become biologically meaningful, and as wake windows lengthen with neurological maturation, the structure of a workable routine shifts substantially. Understanding this biological trajectory prevents the frustration of trying to impose a 6-month sleep schedule on a 6-week-old, or of abandoning a routine at 4 months during the sleep regression when the solution is actually to tighten the routine rather than abandon it.
The AAP Safe Sleep Foundation — At Every Age
Before detailing age-specific routines, it is essential to establish the safe-sleep baseline that the American Academy of Pediatrics recommends for all infants through at least 12 months. These guidelines are not stage-dependent — they apply from birth through the first birthday:
- Back to sleep for every sleep — every nap, every night. No exceptions until baby can roll both ways independently.
- Firm, flat sleep surface — an AAP-approved crib, bassinet, or play yard with a tight-fitting mattress and fitted sheet. No inclined sleepers, no bouncers, no car seats for routine sleep.
- Bare sleep space — no pillows, bumpers, loose blankets, positioners, or stuffed animals in the crib or bassinet. Sleep sacks replace loose blankets at any age.
- Room sharing without bed sharing — the AAP recommends having baby sleep in the parents' room (but in their own separate sleep space) for at least the first 6 months, ideally the first year.
- No bed sharing — regardless of how exhausted you are. Bed sharing significantly increases the risk of sleep-related infant death.
Every routine below is built within this safe-sleep framework. A well-crafted routine does not require unsafe sleep props.
- 360-degree swivel brings baby close to bed
- Lowering side wall for easy access
- Soothing sounds, vibrations, and night light
Newborn Sleep Routine (0 to 6 Weeks)
Total sleep target: 14 to 17 hours in 24 hours. Longest stretch: typically 2 to 3 hours. Naps: 4 to 8 per day in irregular patterns.
In the newborn period, do not attempt a schedule. Instead, build a consistent pre-sleep sequence that you repeat at every sleep — nap and nighttime. This sequence might look like: dim lights, diaper change, brief feed, hold and gentle sway for 3 to 5 minutes, then place baby in the bassinet drowsy but not fully asleep. The sequence itself signals sleep is coming. Aim to put baby down before they cross into overtired territory — at this age, wake windows are typically only 45 to 60 minutes.
Key strategies: differentiate night from day deliberately. During daytime feeds and wake windows, keep lights bright and allow normal household noise. During nighttime feeds, keep lights dim, avoid stimulating interaction, and return baby to the sleep space immediately after the feed. This contrast helps entrain circadian rhythms faster.
Early Infant Routine (6 to 12 Weeks)
Total sleep target: 14 to 16 hours. Longest stretch: 3 to 4 hours (often). Naps: 4 to 6 per day, still irregular.
By week 6 to 8, most babies begin producing melatonin more regularly, and a predictable nighttime stretch of 3 to 5 hours often emerges. This is when a consistent bedtime (rather than just a bedtime sequence) begins to matter. A target bedtime window of 7:30 to 9:00 pm — with flexibility — is appropriate. Wake windows extend to 60 to 90 minutes at this stage.
Add white noise to your routine now if you have not already. Running a sound machine at the same volume and sound type for every sleep dramatically strengthens the sleep association being built. The AAP recommends keeping volume below 50 dB and placing the machine at least 7 feet from baby.
- 24 non-looping soothing sounds
- Rechargeable battery, up to 32 hours
- Night light with adjustable brightness
3 to 4-Month Routine: The Circadian Shift
Total sleep target: 14 to 16 hours. Nighttime stretch: 4 to 6 hours commonly. Naps: 3 to 5 per day.
The 3 to 4-month period is both the most exciting and most disruptive phase. Exciting: true circadian rhythms are solidifying, and many babies in this period will have a longer nighttime stretch for the first time. Disruptive: the 4-month sleep regression arrives as sleep architecture permanently shifts to a more adult-like pattern with more frequent partial arousals between sleep cycles. Babies who were previously sleeping in long stretches often start waking every 45 to 90 minutes again.
The solution is not to abandon the routine — it is to tighten it. Consistent bedtime, consistent sequence, and consistent response to nighttime wakings give baby the framework to learn to link sleep cycles. Wake windows at this age: 1.25 to 1.75 hours. Bedtime: 7:00 to 8:00 pm.
4 to 6-Month Routine: Consolidation Window
Total sleep target: 12 to 16 hours. Nighttime target: 10 to 12 hours (with 1 to 3 feeds). Naps: 3 to 4 per day.
By 4 to 6 months, the infrastructure for a real routine is in place. A consistent 20-minute bedtime routine should now be a firm commitment: same sequence, same room, same sound, same order, every night. A typical routine at this age: bath (optional but effective), pajamas and sleep sack, brief feed, dim light story or song, lay down drowsy but awake. The key addition many parents resist is the "drowsy but awake" placement — rather than nursing or rocking fully to sleep. Beginning this habit at 4 to 5 months is significantly easier than trying to introduce it at 8 months after a fully-entrenched rock-to-sleep association.
Use our due-date sleep timeline tool to map out exactly when to introduce each routine element based on your baby's birth date.
- 100% breathable and washable core
- No foam, latex, springs, or glue
- Greenguard Gold certified
6 to 9-Month Routine: The Two-Nap Structure
Total sleep target: 12 to 15 hours. Naps: 2 to 3 per day. Bedtime: 6:30 to 7:30 pm.
Most babies consolidate to two naps between 6 and 8 months. The two-nap schedule that works for this age typically looks like: morning nap at 9:00 to 9:30 am (45 to 90 minutes), afternoon nap at 1:00 to 2:00 pm (1 to 1.5 hours), bedtime 6:30 to 7:30 pm. Wake windows lengthen to 2.5 to 3 hours. This is also the period when many families begin some form of sleep training if babies are still not linking sleep cycles independently — common approaches include Ferber (graduated extinction), chair method, and fading. The AAP does not endorse a specific method but supports evidence-based approaches for healthy babies 4 months and older.
9 to 12-Month Routine: Stabilization and Nap Transition Prep
Total sleep target: 12 to 16 hours. Naps: 2 per day (one-nap transition often starts around 12 to 15 months). Bedtime: 7:00 to 8:00 pm.
The 9 to 12-month window is often the most stable sleep period before the one-nap transition arrives. Two naps remain appropriate, but the afternoon nap naturally shifts later. Wake windows extend to 3 to 3.5 hours by 12 months. Bedtime routines can now incorporate slightly more language and interaction: a short book, a song, a brief cuddle — but the sequence should still take no more than 20 to 25 minutes total.
At this age, ensure your crib setup meets AAP guidelines: firm flat mattress (no crib wedges or positioners), bare sleep space, no loose blankets. Transition to a sleep sack if you have not already. Use our mattress firmness matcher to verify your crib mattress meets AAP standards for this age.