I got a ornate horned frog (pac man frog) about 2 months ago. He was doing fine and eating about 12-24 crickets a week. He was growing and looking good. Now he doesn't seem interested in eating and is burrowing for days at a time. He's looking rough and I'm worried about him. Any advice would be helpful. I went as far at trying to tong feed him, still nothing. The temperature of the aquarium seems to be fine staying between 75 and 82 most of the time. Please help