Congrats on your first BP!
What type of lid do you have on your tub? Does the tub have a lot of holes?
If it has holes in the lid/cover, you can cover it with some aluminum foil or something to help keep some humidity in there.
If the lid doesn't have holes and your setup is more like a rack system, I'd go with misting every few days... not too much though or it'll house bacteria.
Good Luck!