My DD is 22 weeks (5 months). She rolled over front to back twice at 17 weeks and once back to front at 18 weeks. Since then she has not rolled over either way by herself. She reaches round and rolls onto her side but never all the way over.
I have tried to encourage her with toys etc and have helped her roll over the final bit occasionally. She also has tummy time daily and seems to enjoy it but doesn't really roll in this position (the time she did roll was on her changing mat when I had put her on her front so I could fasten some buttons on her back!) She does bring her knees underneath her and try to push off like she is trying to crawl though.
Should I be worried she doesn't seem to roll over or is it something that will come in time? Does anyone have any suggestions on any encouragements I could give her to get her rolling regularly?

I have tried to encourage her with toys etc and have helped her roll over the final bit occasionally. She also has tummy time daily and seems to enjoy it but doesn't really roll in this position (the time she did roll was on her changing mat when I had put her on her front so I could fasten some buttons on her back!) She does bring her knees underneath her and try to push off like she is trying to crawl though.
Should I be worried she doesn't seem to roll over or is it something that will come in time? Does anyone have any suggestions on any encouragements I could give her to get her rolling regularly?