my baby currently in 5 month she didn't roll, but she had neck hold and she is moving and she is responding to sound , kindly help me why she is not rolling

A. A child wants to roll over between the age of three months to 9 months so right now if a child is not rolling over but has reached all the other milestones comfortably then that is not a problem because your child doing very well as of now as per the age over by nine months then in that case you can take a check with your doctor on that