Oh! Thank you all for your advice! He is eating really well, haven't had to worry about a meal yet. He did get aggressive last week, but he is being treated for mites and he was only aggressive when they were really bad. (I've only been handling him to move him since I noticed the mites, but it was enough to see a change in his attitude.) I am really trying to be a good pet owner, so I would hate to think that he wasn't as content as a snake could possibly be...