Sand Boa won't eat after brumation. Help!

Its been close to 5 months since my KSB has eaten and I’m starting to get very worried. I have tried multiple different changes. More/less heat, more/less humidity, pinky mice/rats live and pre-killed. Nothing seems to be working. He is still actively drinking and moving. Just some minor weight loss. Anyone have similar issues and a solution? Help!!!

Update: I decided to soak my sand boa for a bit, just in case he was dehydrated. Put him back in enclosure and waited a few days and attempted to feed again. This time he took it!!! So happy he’s back in the swing of things. Not sure if soaking helped but it worked this time. Hope this helps someone else in the future.