M.C.
My baby is almost 5 months and we still swaddle him, he's really grown to like it, he sleeps really good when swaddled. We'll probably start to wean him off the swaddle in the next month, my friend said to loosen it a little bit every night until he doesn't need it anymore. In regards to how active they are, i don't think it stunts any development. My son is very active, he's weight-bearing, rolling over and scoots when on his stomach, so i wouldn't worry about that. Personally i think swaddling is the best, and i tell all my new mom friends about it.