Froglets need to eat alot and frequently. So if you aren't sure if they are getting enough that might be why... make sure you are constantly cleaning up the poop. if you don't have a bathing dish you definitely need to be misting more. Mine bath daily on there own for quite awhile and I mist at least once a day more if I see the humidity levels drop. Humidity should be between 60 and 70 and temp between 70 and 80, also make sure you are changing the paper towels very frequently as bacteria and germs can form very easy. Id say every few days max, daily if its not stressing froglets.

Also DO NOT handle them more than you need too... this causes stress and can also lead to deaths