I would follow the above advice. The only thing I'll add on is don't try another feed within 5-7 days. He's going to need some time to destress from the move anyways. Don't handle for 2-3 weeks. Or until he Is eating regularly. But 2-3 week minimum. When you do try to Feed again I would start with a live mouse. Leave him in his enclosure. Take out the hides so the mouse doesnt get trapped in the hide with him and watch carefully for him getting walked on, hiding his head, or jerking away from the mouse, or striking without coiling. These are all signs of a snake not wanting to eat, or a stressed snake. If he refuses take the mouse out immediately and keep it for next week.