my baby is 7 months and 21 days old and still not rolling yet, holds his head steady while on tummy lifts his hands and legs but isn't rolling independently. should I be worried?

A. Yes you should be concerned about it as a child should learn to roll over between the age of three months to 9 months so as of now your child hasn’t started to show any interest in doing it try to encourage your child all over next to your child to encourage your child to do what you are doing