Wow first jones I hope that your frog gets better!! I am very glad that you came to the community with the problem, I have never seen anything like it and I would like to learn what to do as well.
I am new but I wouldn't worry about feeding it now not until you see that it has some room for some food. My frog has slow bowels and it takes forever for him to digest a big meal. What I do is keep him active but not really feeding when I think he should poop. I feed one worm or one roach. Normally he could easily eat five to six big worms.
I just don't want to over feed him because you do just as much harm overfeeding as you do underfeeding.