I have a Pacman who was given to me because he wouldn't eat, he didn't for 9 months... the guy kept him in gravel, so what I think happened was he accidentally ate a few pieces and became impacted. Anyway, he eventually passed through and now he eats a mouse about every 2 weeks. I also keep him on coconut fiber, you should try something like that where he can actually burrow and feel more secure. It's also good for humidity. Good luck!