So ds sleeps okay on his back at night? If it's just during the day that's good 'cause you can check on him. The midwives in the hospital let my dd sleep on her tummy in the nursery, much to my horror of course but they told me not to worry, they were always there to keep watch. They said she was very unsettled on her back and would keep waking herself up even when tightly swaddled.
When I brought dd home, the only way she would sleep well was on her tummy so I gave in. I did purchase a grobag to try and set my mind at ease a bit IYKWIM!! After a couple of weeks, it no longer bothered me and I stopped checking her every five seconds! Hehehe, I used to put the monitor as close to her as possible and if I turned the receiver volume right up, I could hear her breathing. :oops: