Ok guys. Help me out here plz.

I've had my BP Buddy in his new home for 6 days now without touching him. The tank is a 20 gallon long tank, which is set up to best of my abilities. I finally got the temp working. One side is usually around 89.5-92 F while the other one is 80-83. I've got two hides on each side. I have Aspen substrate on top of a thick layer of newspaper. I also have a medium size dish bowl for the snake to soak in + for humidity. I usually refill it every 2-3 days. My humidity is always around 55-59% (I think Buddy might be about to start shedding because his skin kinda got darker) so I may need to increase humidity. So my question is, can I spray water on Aspen substrate to increase humidity? What if there are 2 UTH on one side of the tank (not the side with the water bowl) I know of few other ways to increase humidity ( such as moving the water dish closer to the lamp)

Another thing I'm worried about is that Buddy doesn't seem to like his hides at all. For a week he's been chilling outside. Thankfully he hasn't been exploring too much as of the last 1-2 days and instead just chilling (before he would explore and look for ways to escape) What should I do to get him to use his hides?

Also when is time to feed him? He might start to shed soon. I haven't fed him for about 2 weeks now. I offered him F/T mouse (small one) and he refused to eat about a week ago but I think that might be because I was handling him too much right after bringing him home but ever since i set up his tank I haven't touched him (for almost a week)

I bolded the questions so that they are easier to be found. THANKS A LOT EVERYONE. I LOVE this site and it's been awesome in educating me on how to care for a BP.