WTF doesn't eat a lot

[elly]

90% humidity is a bit high, you might want to raise the lower end of the temp, get it up to 70 degrees F.
Not wanting to eat is a little worrying. Is the one that doesn't eat shy or unusually nervous around you? If so it might just be stress.

Watch and see if that frog spends all its time soaking and doesn't get out of the water bowl. That might be a sign of trouble.