I would skip the feed this week and wait for him to get settled. If you wait the week you'll know for sure he will be hungry and less likely to refuse. You wont be hurting the snake by skipping and meal and may be doing him a favor because the feed may add more stress this early in. My guy refused feeds for 2 weeks after I got him, so I had to build a storage tub for the mouse so I could keep him alive. Best of luck and congrats on the pickup