The Four-Month Rescue — How to get back to sleeping through the night

For 3–6 months. Start tonight. Most families see a change within three weeks.

Your baby used to sleep. For four months they slept. Now they wake every forty-five minutes, and nothing that worked before works now. People keep telling you to wait it out.

Instead: you learn why this one does not pass on its own, which two things to change during the day, and what to do at the 11pm wake-up tonight.

At four months the way your baby sleeps changes for good. It is not a phase. Waiting is the one thing that does not work.