Alyssa would break out of a swaddle pretty early cuz she was so long (I had a swaddle sack thing, with velcro) so I started just swaddling her arms and that worked for a while but I stopped cold turkey when I forgot the swaddle sack while on vacation, she has slept comfortably on her tummy since then...about 12 weeks. She always slept better on her belly. Still does. She never fell asleep or stayed asleep on her back.
"Someday love will find you...break those chains that bind you!!"