my baby is 6 months old she rolling by side and takeing her leg toes in her mouth is this normal..she born premature but still not rolliing

A. Taking thumb or feet into the mouth is a common situation with kids and their role over this is very comfortably a normal child can reach the milestone between the time of three months to 9 months with a premature child you can calculate one month extra but right now what you mentioned is very good