at which month baby will roll over ...my baby is 3 months old she's not trying to do also ...can anyone suggest what needs to be done

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