Tomato frog possible fungal trouble?

[Tedm95]

so considering nobody responded to that last post i put up, i figured i should put up an update on jeffreys condition.
all of his spots are pretty much the same, but some of them turned a yellowish color. the lump on his throat seems to have popped and his now a god- awful sore with strange yellowish- white bumps around it. Ive been putting neosporin on the sore to keep it decontaminated in the hopes that it will heal up. His appetite has not improved as far as i know, and I've resorted to force feeding him waxworms, i plan to start putting calcium on them because it couldn't hurt. Jeffrey has been shedding quite a bit also, it's a little bit concerning because its like a layer of skin has been shedding off daily. Today i moved Jeffrey to his quarantine tank yet again, but put some plants in just to make it a little bit more home- like. I intend to keep switching the tank around every day. I also decided to soak him in melafix and primafix for the heck of it, i don't think he liked it.

I took him to a vet a few days ago to see if i could have them check him out, but i quickly reeled away when they said it was gonna be $90 just for them to look at him. At this point, i'm pretty distraught on the whole thing, and i'm thinking i might as well go to a vet and let whatever money I've got take the hit, its just becoming too troublesome to try to figure this out on my own.

anyways heres a few pictures of his sore, i've still got some hope that some kind/knowledgeable person will know exactly what i have to do to make him happy again..