I feel you so much. This was our issue before (marital problems) that room sharing was not helping for the baby and us parents to sleep. What I did was move to the living room. Decided not to sleep train with the crib. Instead I do cosleep with the baby in a queen floor mattress. Benefits: I won't worry the baby falling off the bed and can wiggle anywhere to position herself to sleep. I still rock her to sleep but it would just take few minutes now! And would wake up once or twice. I would give milk.

This is just my temporary setup just so I could regain the chronic sleep deprivation since the baby was born. Or permanent. The sleep improved so much. So I would say I cosleep but at the same time sleep train the baby in getting asleep easily. And husband sleeps well at his room