Firstly, I didn't realize how disapproved of force feeding was. I know it's traumatizing, but I was under the impression that it was just something that had to happen when reptiles went off feed. I don't WANT to force feed him, so if so many people are saying not to, I'll abstain for now.
He has three solid and tight caves. He can perfectly fit inside them, pushed up against the walls. Sometimes he even pushes the substrate out from beneath him so he has more wiggle room. The half logs are just there for amusement.
I used to hang a curtain over his tank to block everything out, and that got him eating several months ago when he stopped eating before, but when I tried it again this time, it didn't work. I don't think he's particularly scared, though. Just the other night I saw him roaming around his tank. All his stuff is familiar, there's nothing new. It's just slightly moved around. But he might not know that, I realize.
I also understand that cleaning/handling = not going to eat. I don't attempt feedings within 2-3 days of these activities. Per someone's advice, I'll leave him alone for a week, only opening his tank up to change the water.
I'll remove the humidifier and instead place it just outside his tank. That should also open up some space for him.
I am familiar with humid hides. I'll use those when he needs to shed. Hopefully he's smart enough to utilize it.
Please let me know if I missed something. I am trying to be as receptive as possible. Thank you all very much.