I am late to this thread-hope she is ok-but I also acquired 4 monkey frogs in Sept and one had a problem; not doing well/eating/losing weight.

What worked is soaking him in dilute Pedialyte every day. for a week.

In addition Lafeber makes a carnivore liquid diet-I gave him this twice (use guitar pick to open mouth) and I gave about 0.2CC twice 2 days apart. Also did a fecal-if he has parasites that has to be dealt with.

Isolated him so it would be easy to hunt and he started eating again.

If you still have him/them I would love to talk to you more!