my baby is 5 months old, he has rolled over only few times, now literally he don't try moving either side, if we try to helping him starts crying

A. It’s okay a child reaches the milestone between the time of three months to 9 months so if your child has already done it but not doing it as of now there’s no problem again after sometime just try and give more time as that is something which is going to encourage your child to roll over