mam/sir, i have 5 month &15 days baby... she did't rolling (lie down)..any prblm ?

A. Hello parents, Some babies are ready to roll from the get-go, while others take their time. On average, babies tend to first roll from tummy to back between 2-5 months, from back to side between 4-5.5 months, and from back to tummy between 5.5-7.5 months. Should I be worried that he doesn't roll onto his right side? Don't worry. Every baby develops at their own pace. Just keep doing tummy time and soon you will see him roll-over.