Sounds good. Did you get a good thermometer? 86-90 is where you want the warm side. The soil should be fine. As long as she has enough room to dig. Here's the picture of my adult enclosure, the left side is the warm side. I use heat tape on this tub, no light...
I'm not sure what your room temp is at night, but definitely get some heat back on that boy. And, does he look dehydrated? Sunken eyes, wrinkly skin, etc...? It may be worth missing him in the morning if he looks that way. He may be licking water from inside the most hide too.
And another trick. I put the paper towels on the area they like to poop in, and just change them out. Saves allot of time spot cleaning.