For some reason, my Leo won't eat. I've had him for 2-4 weeks and the most he has ever been interested in a meal was when he looked at it, came closer, and walked away. Maybe it's because he shed yesterday? I don't know, I've tried feeding every day to every other day. He has proper conditions, has never been woken, maybe he's lonely? Well, it's a 5.5 gallon tank, I don't think there's room for another. He is a baby, maybe around 3-4 inches max. What do I do?