a lot of things needs to be changes asap, but it is saturday late pm and everything will be closed for you to get, so this is what you need to do today:
1. get him out of his enclosure and put in spring water ( the one they sell on bottles). do not use tap, purified or anything else, unless you have water conditioner and can use it for tap water.
if you have unflavoured pedyalite use it for a bath - at this point I would do 1 part of pedyalite, 6-8 parts of water. Water level should be no higher then frogs chin and water should be warm ( 80ishF). keep him for 20 min in there. keep an eye if he is having seizures make sure he won't drown.
2. while doing Nr. 1 take all substrate out, clean the enclosure very well, put some moisten with spring water paper towels, put some hide, water dish, like he used to have, except substrate. Water only spring for everything, water dish and spray too.
3. after bath put the frog in the enclosure.
3. inhale, exhale, repeat a few times, if you are drinking age, get some wine or something, but not too much, relax, not much more you can do today.
as well before you started to relax make sure you fix temps - 85-90 is total overkill, no more then 82 during a day, you want to keep adult frog at 75-78 ( night) and 80-82(day)
next post is going to be about tomorrow as soon as stores are open.