Hello and welcome to FF! Sorry your frog is not doing well . As per other posts; your frog is suffering from Toxic Out Syndrome due to use of distilled water for it's bath and guessing was also used to mix with substrate. Distilled, R/O, Demineralized and similar waters have little to zero mineral salts ions. When a frog comes in contact with such waters; it's minerals actually flow out of frog into the water creating a dangerous physiological condition leading to neurological damage and even death .

First thing to do is to get some unflavored Pedialyte or similar baby electrolyte and make a bath for frog. You will mix 90% 80F dechlorinated water with 10% Pedialyte in a bath to frog's chins depth. Can use a small critter keeper or small plastic bowl with holed up top. Leave frog in bath for 20 minutes and repeat daily for next 5 days; returning frog to enclosure with properly mixed substrate using dechlorinated tap water. Shredded coco should be slightly damp so it clumps in fist without dripping water out.

A good dechlorinator is Seachem Prime and it should be used to treat tap water with it for the frog bath and to mix with substrate. Can use distilled water for misting to prevent watermarks on glass; but do avoid spraying frog with it.

Please go ahead and post answers to Dan's questions and do read the linked article by Mike. We will try our best to get your frog back in health. Getting some electrolytes in frog is crucial to it's survival and should be done right now. Please let us know when you do so and then we will get to step 2 which is to get some nutrients in it. Good luck !