A.M.
I have triplets and we swaddled them until they were 5 months old. It was the only way they could sleep. They seemed to squirm and jerk so much that it would wake them up. Two of my three had reflux. I would suggest buying the miracle blanket....they have a website and it shows you how to use it. They advertise it as "the gift of sleep." It worked for us. It was like 30-40 dollars. I knew to stop swaddling when they tried to get out of it as soon as I put them in it.