Help?

[grub]

I have had jiraiya for a few months now and recently moved him into a 20 gallon tank. He has allways been an active frog and every day I would see him in his pond or on his substrate. Latley he has looked really sickly and I am not sure what is going on. He is bloated and his eyes are sunken in. He does not bury himself anymore which is an odd behavior because he used to bury himself daily. Today I decided to put him in an ICU which is basically a tufferware container with watered down paper towels and a heat pad with themostat. I also force fed him a cricket that was dusted with calciumn. This is the best i can do for now as I am still looking for a vet that will see him.I was wondering if puttin him in an ICU was a bad idea and may cause more stress to the frog? Or if anyone knows whats wrong with him? He is also very weak he doesn't try to get away when I touch him. Another thing I noticed is that one of his pupils is super wide, and the other looks normal.