Okay. How do you care for them? Do you follow a careguide?
Look, I think you should just let him calm down. If you move his enclosure, give him rest. Don't try to hand feed him - just leave some food in a bowl. If his enclosure is in good order, pr. a good careguide for your frog species, just leave some food in a bowl around his normal feeding hours and leave him be for a week or so.
If he is this stressed, moving him around, staring at him while he's feeding, picking him up, rummaging around the tank, moving him to a new tank - you'll stress him outta his mind. One thing I know from toads: A stressed out animal can leave to weakened immune system, which can lead to diseases that're hard to heal and handle - without stressing him further.
So..I'd recommend just checking his surroundings pr. a good careguide, move the tank if you have to and then absolutely ignore him, except for feeding. Moving him into a totally new tank where he doesn't recognize anything and his preferred area is gone does not sound like a good idea right now.