Sleep just getting worse 😭

My baby has never been the best sleeper. He started fighting sleep at six weeks old and hasn’t let up now at 20 weeks. Typically, we were able to rock him to sleep and put him in his crib and he would sleep all night long or only wake for a feeding. Then the four month regression happened. I thought we were over it because he started sleeping through the night again. Now, all of a sudden he will not let us put him down. As soon as we go to lay him in his crib he wakes up screaming and is inconsolable. Even when putting him in our bed. He refuses to sleep anywhere but being held and I can’t sit in the rocker and hold him all night long.