Might want to bump the warm up a few degrees. Most people on here keep theirs around 92, I keep mine as warm as 94.

All these changes were made fairly recently? It could just be that he is still stressed and needs to acclimate. Do you handle him a lot? Maybe let him be for a bit.

May also want to try a different type of food.

Don't offer too often because that will stress them out more. Once a week is just fine