My daughter is 4.5 months old and she doesn't roll at all. She has started grabbing her legs and moving to her side, but that's it. The doctor said not to worry, and that the best thing I should do is let her get frustrated and she'll learn to roll on her own. I've tried that, but her crying makes me so anxious! Does anyone have any ideas/games to play for her to practice rolling? Should I also roll her the same way? Do the arms go over first, then the legs, or vice versa?? Help!