Im at a lost. My son is 3 months and wont sleep on his back!! If i lay him on his baxk he wakes up right away. Rolling on to his back from his side startles him awake. Its starting to get to the point where we are now losing sleep over it. hes also getting very stuffy at night and we even have a humididier in the room and it helps a little but not much. its honestly getting to the point where im going to start laying him on his tummy to see if its better. any advice?

ADDED: He knows how to roll over from his tummy to back, ive also tried leaning him against things, even rolled blankets to see if that would help, tried a side sleeping insert which he hated. And I obviously wouldnt put my child in a unsafe situatuon if i felt something was going to happen.