u/IndependenceLegal109

I received him by mail just over a month ago, he is seven, around six feet, and was at the shop for two years. I have checked temperature, humidity, and stopped handling him for three weeks. I have talked with the shop I ordered from and am feeding frozen thawed medium rats, making sure they are above 95F. He does still appear to be at a healthy weight, but still I don't know what I am doing wrong and am starting to get worried. I have only fed him while he was already outside his hides and exploring while at night, i was thinking of maybe trying chicken broth? Any advice?