#AskTheExpert is there any cause of concern if infants 4 to 5 months have not turned. If so what could be the reason and possible solution

A. Your baby may be able to kick over from their tummy to their back as early as 3 to 4 months old. It usually takes them until about 5 or 6 months old to flip from back to tummy, though, because they need stronger neck and arm muscles for that maneuver.