Add a good size clump of damp moss to each hide. Keep it damp until the shed is complete.
You can get nice clean moss at the big box pet stores.
Ive used this for a long time and have really liked it.
https://www.amazon.com/Zoo-Med-Terra...s=zoo+med+moss
Do this on top of the regular misting. This is a tip Ive used a long time and it works great. I keep it damp during a shed until it is complete and then I will allow the moss to dry out before I make the moss damp again.