Calcium Lack Paralysis or Back Injury???

[Lija]

Emily think of Pogo as 500lb human. how to help him would be very similar as you'd do for a human.
so nothing drastic, everything in moderation, progressively minimazing food intake and increasing moving around.

food has to be nutritious and not fatty. Superworms diet is like burger with fries diet.
How is he eating them? You put in front of him or are you using tongs?

qt rank - moist papertowels changed daily, plant, something to sit on not far from a ground, shallow water fish, cover 3 sides of the tank with anything not see through. Having that will help you see pooping, how often, how does it looks like. Things like that. It's temporarily.

water therapy. get water conditioner, anything from reptile or fish section of the pet store would do. I like prime by seachem the best, cheap and last for a very long time. Use that for any water (tap/spring) you use.
get pedialyte ( non flavoured, over the counter in any farmacy), mix one part of treated water with one part of pedialyte. Keep the frog in a bath or about 20 min every day for a week, water level no higher then frogs chin, supervise and assist if needed. Being obese he might not be able to support himself well in a water.

Mineral/vitamin supplements. Get reptiboost by fluckers, coat with it food you use. The best would be if you could find canadian nightcrawlers or earthworms from any store that sells fish bait. Just make sure it's not dyed.
earthworms from your backyard may contain stuff you don't want to feed to your frog.

Please keep us updated on a progress, bath concentration might change, the game plan may change accordingly to the progress. Really hope he'll make it.