Personalized guidance backed by sciencePersonalized guidance backed by scienceThe Cocoo Blog
Step-by-step guides and real talk from a first-time mom — the sleep science behind what actually works.
Sleep Science · Sleep Regressions
The 10-month sleep regression is real — but it's not primarily about more night waking. We analyzed 96 babies' sleep logs at 10 months. The average night wake count actually dropped. The main problem was something else entirely.
Sleep Science · Sleep Training
Most sleep training advice tells you to start at 4–6 months. What it doesn't tell you is how to know YOUR baby is ready — the 5 specific signals that matter, plus data from 1,085 tracked babies on what night sleep looks like at each age.
Sleep Science · Comparison Guide
Every major sleep training method explained — what the research actually says, who each one suits, and the #1 reason sleep training fails (it's not the method).
Sleep Science · Reference Guide
How much sleep babies need at every age — and the schedules that actually work. Total sleep, nap counts, wake windows, and sample timings from newborn to 24 months.
Sleep Science · Reference Guide
The exact amount of time your baby can stay awake between sleeps — from newborn to 24 months — with sleepy cues to watch for and what to do when the window is off.
Sleep Science · Root Cause Guide
Dream feeding works for some babies and makes things worse for others. Here's how to tell which situation you're in — and three root causes behind a dream feed that's stopped working.
Sleep Science · Data Study
Most babies don't consistently sleep through until 9–10 months — and the path there has three clear disruption points at 4, 6, and 9 months. Real data from 176 babies tracked in Cocoo.
Sleep Science · Root Cause Guide
Short naps ending at 30–45 minutes almost always come down to one of four diagnosable causes: a wake window that's off, a sleep association, overtiredness, or an environmental trigger. Here's how to tell them apart — and which fix is yours.
Sleep Science · Root Cause Guide
Between 4–6am, babies enter their lightest sleep phase. Any unmet need becomes impossible to sleep through. This guide covers the 4 root causes of 4am waking and how to diagnose which one is affecting your baby.
Sleep Science · Data Study
When a baby fights sleep despite being exhausted, it almost always means they've passed their sleep window. We analyzed 751 babies to understand how sleep onset time relates to night quality — and what to do about it.
Sleep Science · Quick Guide
Your baby's brain just shifted to adult-like sleep cycles — that's why they're up every hour. Here's what's happening and 5 specific things you can try tonight.
Guide · Sleep Habits
Your baby can learn to fall asleep without being held — and you don't need cry-it-out to get there. A gentle 3-step method: put down drowsy in the right window, pat and shush, then gradually do less.
First-Time Mom Series · Part 1
No matter how tired they are, newborns can't self-settle — their nervous system isn't built for it yet. Here's what actually helps, from a mom who learned it the hard way.
More posts are coming.
Nursing to sleep, short naps, contact napping, wake windows, the 4-month regression — more guides and posts are on the way.
Try Cocoo while you wait