I've learned that with both of my critters, that they feel the safest when they can touch the sides of the homes with their bodies. If they can feel their surroundings, they're more comfortable. So I would agree that your home for him is way to large. If you go to your local petshop, they have some good little hides you can get for him. I recently had to upgrade my largest's hide to a bigger size, so my smaller one got his old home. The hide was about $11, and he seems to enjoy it, so I recomend spending a little bit of cash on a good hide-out for him. There are a ton of options, too. If you go into the reptile section of your local pet store, you'll usually find logs, and caves, and all kinds of good stuff. If you go into the hamster, gerbil section, they usually have some fun, colorful hides that will work, too! I got my smallest one a pink castle looking hide, and he loves it.