Sleep
Practical, sourced guides on sleep for the first year.
Medically-informed · Sources: CDC, NIH, WHO, AAP
Sleep3 minThe 3 AM-proof sleep setupAlmost every scary headline about infant sleep comes down to the sleep environment — and the environment is one of the…Sleep3 minWhite noise, done safelyThe womb was loud — a constant whoosh louder than a vacuum cleaner. Steady noise recreates the familiar sound floor and…Sleep3 minDaytime naps: a loose rhythm emergesAround now many babies drift from random dozing toward a sketchable day: wake, feed, play, sleepy signs, nap — repeat.…Sleep3 minLonger nights: help them stickAround two to three months many babies start producing one longer night block — four, five, sometimes six hours. If it'…Sleep3 minNight shifts for two-parent teamsTwo people each getting one protected 4–5 hour block beats two people surviving on shredded 90-minute fragments — same…Sleep3 minDressing for sleep: the sleep sack eraLoose blankets are off the table for safe sleep, swaddles retire when rolling starts — the wearable blanket is what rem…Sleep3 minThe 4-month sleep shift: read this earlySometime in the next month or so, many babies' sleep temporarily gets messier: more night wakings, shorter naps, harder…Sleep3 minWake windows at the three-month markAwake windows commonly lengthen to about 75–120 minutes around three months — enough for a feed, a proper play block an…Sleep4 minThe 4-month sleep regression: a survival guideSomewhere between 3 and 5 months, a baby who had started sleeping longer stretches suddenly wakes every hour or two, fi…Sleep3 minWake windows from 4 to 12 months: the working chartA wake window is simply how long a baby can comfortably stay awake between sleeps — long enough to build sleep pressure…Sleep4 minSleep training methods: an honest mapSleep training is optional. Plenty of families never do it and arrive at good sleep anyway; plenty of others do it and…Sleep3 minThe 3-to-2 nap transitionMost babies consolidate from three naps to two somewhere between 6 and 9 months — the third catnap of the day starts ge… 
FirstWeeks