DS is 7.5 months old and has just (10 days ago) learnt how to sit up from being on his front. At night we put him to bed on his back (sometimes semi or full swaddled, depending on how easy he has been to put down). He has a gro bag as well. Ever since he learnt to sit up from his tummy, as soon as he stirs ( so can be every hour or so) he flips onto his front and then sits up. He does this half asleep and then gets stuck because he cant get back again, and ends up a sorry crying bundle at the bottom of the cot, wakes up v quickly and then is a pain to get back to sleep. He also sometimes does this when we try to put him down to sleep, even though he is very tired. Any tips/ideas? Or does it just stop, and if so how soon?