So my almost 20 weeker has never been a good sleeper. Partly due to the fact that he consumes a ton each day, around 40oz
We recently introduced solids per our pediatrician in hopes that will keep him satisfied.

He only sleeps on me and even then wakes at least 4x per night. We do lay him down for the night in his crib.. he was sleeping for at least 2 hours in the crib (7-9pm) but now he won't even do that.

Last night we tried to put him in the crib, second I put him down.. screamed bloody murder.

Rolled him on his tummy... instantly asleep.
So now what do I do? SIDS is so scary and I would never want to jeopardize the health of my child. AAP recommends back sleep for this reason. Should I just wait until he can roll over (not quite there yet) and let him work it out?
I don't want to miss my window of getting him to sleep in his crib as he gets older and cements his preference. I don't sleep well with him and it's totally starting to effect me.

Any advice? Commiseration? Does your baby tummy sleep?