my child is 5 and half month but he still not roll over

A. sometimes rolling over can come after 4-5 months so no need to worry for that and it is not necessary that it should come early. many times the weight fof the child is more and that also delays the rolling. if if the growth and weight of the child is within normal limits then xno need to worry about it. just carry out regular massage and proper diet and the child will be fine in next few months