My baby is 7 months and 3 months ago rolled from front to back. He did it a handful of times only front to back and hasn’t done so since. He has never rolled back to front. He seems to be developing fine in other ways such as being able to sit unaided, puts pressure on his feet when we hold him standing and looks like he is trying to crawl during tummy time (arms are in position and he tries to move his legs but can’t quite coordinate). I was confident it was fine as he seems ok in every other way but I’m now worrying he seems to have missed a pretty big step. I know babies develop at different rates but I thought he would have tried again in the last 3 months 