ok, this is what I think might work.
Get a put up bed and put it in his room next to his crib. Lay him in his crib, don't rock him, just lay beside him and reassure him that it's ok, he's just going to sleep. He might not sleep, he might cry, but you are with him, reassuring him all the time. Sleep next to him the whole time if you think it might help him to get used to it, you might have to, but we can work on getting you back into your own bed when he is settled. It will take a while, but do it for naps and bedtime and be consistent. I will keep a check on this thread and try to help you through it.
Good luck