You can put its water bowl over the UTH to help raise humidity. You're better off blocking off the top of its tank if you aren't using a tub. Blocking it off will help hold humidity. It will use the hides when it's comfortable. Just leave the snake alone. People typically worry or fret too much and it makes the snake stressed out. Just let the snake acclimate to its new surroundings. You can keep the thermometer in its tank so you can see hot side and humidity via the probe and the unit sitting on the cool side to see its temperature. This gives you more important information than the temp/humidity in your room. Overall sounds like you're moving in the right direction!

Regards,

B