I recently (about 3 weeks ago) moved to a new house and since them Sam doesn't want to come out of his cage. A few times I've picked him up to pet him and then put him on the floor hoping he'd stay out for a bit. He just sniffs for about a minutes or so and hops back in his cage. He shows no inclination of wanting to come out on his own. His appetite, drinking and bathroom habits are normal. His playing habits seem to be as well. He still begs for treats and lets me know when he wants love. It worries me that he won't come out. What can I do to encourage him and make him more comfortable in our new home?