Well poop, nobody has any ideas then huh?
In any case, figured I would do an update if any lurkers out there are curious. The frog is still alive but really isn't doing much better. I moved it into an opaque container and switched to cocofiber instead of paper towel, and it seems less stressed this way. Appetite is absolutely terrible and even when eating from tweezers, it take multiple tries for it to grab the prey item. I end up sitting there for a solid 10-15 minutes just to get it to eat one single thing, and so far haven't been able to get it to eat more than three things a night. It's so tedious and it's making me feel kind of miserable thinking about having to do this every single night for the forseeable future.
I'm going to try and get a stool sample to have it checked for parasites, but according to the vet the sample should be no more than 12 hours old so that's going to be a pain trying to get it into the office 40 minutes away when the frog has only pooped at night so far.