Assuming your husbandry is perfect, there's no need to worry, he's still adjusting. Offer him a meal after a week. It's also better not to handle him before feeding. Try not to handle hin too often until he eats for you. If he's interested, eventhough he's in his hide, he will go out to hunt the mouse. No need to wake him up. Maybe what you can do next time is just put the mouse in his enclosure and turn off the light. Check after 15 mins, this usually works for me with new additions. Good luck!