Hi sparks19. Hannah is beautiful!! Love the tongue
Could you post your routine for us? Maybe we can tweak that a little to make things a bit easier. Also, what are you doing for a winddown now?
As for your dd sleeping on her back, ds sleeps on his too and I would just roll him on his side, place a rolled up towel in front of his belly and do shh/pat. If you don't want to do that, you can find a variation of pat that works for your little one (i.e., rubbing her belly, patting her leg or her side).