why not just keep sleeping on your back?
I used to ALWAYS sleep on my stomach. I could NOT sleep on my back at all... then I started to develop this numbness in my left arm... b/c I had it up under my pillow when I slept on my stomach... I never saw a dr for the numbness but it ONLY happened in the midddle of the night or AM when I woke up AFTER I had slept on my stomach... my neighbor a PT and internet research suggested it was a pinched nerve or compressed one casued by sleeping with my arms over my head... I forced myself to sleep on my back.. which for a fwe nights was HARD..but when I slept on my back my arms were fine..no falling asleep..so I forced myself to do it... and now I fall asleep on my back fine... i woudl still prefer to sleep on my stomach, but the back sleeping isf ine.. having a comfy bed and nice sheets/pillows helps too... id' fricking buy an ew bed if I had too.. bed dealers are like used car sealeman and will wheel n deal like crazy..
we got them to knowck of a LOT from the "sticker price" and ahve a VERY VERY VERY nice / $$ bed... and wow does it makes leping better.. we also got a big one.. our three small kids routinely "sneaK' into our bed late at night and I wake up with a 3 year olds feet in my face a lot ...
anyway..force yourself to sleep on your back for aw hile and it will be easy in time...
not to go off topic tgoo much..but in college I took a sleep and dreaming class.... the teacher talked about techniques to make yourself fall asleep better... this will help you get to sleep on your back... you need to day dream.
the brainwaves created during day dreaming are similar to the brainwaves that occur when you first fall alspee... you have to have a daydream that is someting pleaseant, not sexual, and something that you keep the same very night... for example, you coudl have a daydream that you taking your child to the zoo.. you woudl day dream about pdrivn to the zoo, parking, waiting in line, getting in, walking to the various exhibits.. eating lucnh.etc. keep the dream the same every night and each night you just 'start" the daydream and slowly go through it in hoyour head... do it over and over each night.. preety son your brain is trained taht this "dream" precedes sleeping, and the brainwaves you cfreate mimic the waves before sleep and helps your brain fall aslseep. i've been doing this for years and fall asleep in 10 min or so or less evvvery night... if you dream aobut naked men/women it won't work..sorry.
you can dream about being superman and flying around saving people, about the zoon, about whatever you want.. as long as it's the same very nightand it's something pleasant for you to think about... good luck.