Do you have a thermometer in his tank? If not you need one ASAP. 74 is too low. Their temps should be between 75-80 at night and 80-85 during the day. If the frog is a baby, temps shouldn't get above about 82. Get a heat mat and put it on the side of the tank, or get a red bulb. He needs a supplemental heat source. If you are just judging by the temperature on your home/apartment thermostat, the actual temps in his tank probably drop below 74.
Also, you NEED a hygrometer (you can by thermometer/hygrometers at most pet stores or online). I can tell you that his humidity is too low. The only way misting every two days could keep an enclosure humid enough is if you live in somewhere neotropical like southern Florida. Immediately start misting his enclosure well at least twice a day.
This is why he wasn't eating. When conditions aren't ideal, these frogs just sort of shut down and go into a state of seriously slowed metabolism called aestivation. Since he ate recently, he will need heat to digest the food. Get his temps up ASAP.

Cocohusk is a problem as it can cause impaction if the chunks are eaten. Get coco-fiber instead. It also holds moisture better. Finally, if you can get him into a low traffic area that would be good. They can get very stressed out by people moving around. If you can't move him to a low traffic area, it would be good to cover three sides of the tank so he feels more secure.