Why Your Baby's Sleep Suddenly Changes at 4 Months: The Brain Upgrade Briefing

Understand the science behind the four-month 'regression' and what milestones to expect next—practical tips from a parent-pediatrician.

In this insightful briefing, we explore why your baby's sleep patterns often shift around the 4-month mark, linked to a major brain development milestone. As a pediatrician and parent, I understand how overwhelming these changes can feel, but knowledge is empowering. You'll learn what to expect during this phase, practical tips to navigate sleep disruptions, and how these changes set the foundation for healthy sleep habits, helping you feel more confident during this transformative time.