Hello,
I will contact my vet and see if I can get either of those options done. It is very confusing not having an answer for him and seeing him in pain. If I end up getting an answer I will update my post for others who may be facing similar issues.
Thank you for your advice.

Here is his chin today

Hi krista , thank you for the suggestions. I will Try those ideas. He has started to slowly come around to using it and it’s 50/50 now if he’s in the box or on the floor. He does have gabapentin and zylkene to help lower his stress. Will update with results!

Hi Laura, thank you for your response. I guess I should have mentioned what I have Done. I have Two litter box in his room with two different kinds of litter and do use an enzymatic cleaner to clean the messes. I will Try moving the boxes around to see if that makes any difference.