I too had a hard time with humidity, After struggling with different methods, I finally found a method that suited my needs

I would always have to mist the tank many times a day which I can't do all the time since I"m up at school, I've tried a bigger water dish, different substrate.

I ended up buying a tropic-aire humidifier and pump and tin foiled the top, the pump is adjustable so u can control air flow to sweet spot the humidity.



As you can see, he loves it