Decoded: The First Year | Episode 20 | Why 4–5 Months Is When Sleep & Meltdowns Explode | Dr SCL

Decoded: The First Year · Dec 10, 2025 · 9m

Today we’re looking at one of my favourite stages: the 4–5 month phase.

It’s when your baby starts waking up to the world — literally and neurologically.

They’re starting to integrate reflexes, control movements, and explore how their body works.

But here’s the catch: it’s also when a lot of parents start comparing.

“This baby’s rolling already!”

“Mine still can’t lift her head long enough!”

So before you fall down the Google rabbit hole — let’s decode what’s really happening.