Yes!
There is no need to increase humidity for Bredli. Your water bowl should provide plenty of moisture.
In THE MORE COMPLETE CARPET PYTHON, Nick Mutton mentions that too much humidity has adverse effects on the shed. I believe I have that source correct. If not, I read about it from another Bredli specialist.
I really hope you can kill off the mites.
You may still be able to get away with a soak or two if needed but I would not use any Reptile Spray until the shed is complete and he's had a day or so to adjust to the new skin.