More than likely if he had mites that were visible to you then they have already laid eggs and are too small for you to notice. I would definetly take him off the cypress because that is like heaven for mites. Put him on white paper towels for substrate and treat him for mites regardless if you see them now or not because once you see mites, there is already an infestation.
There are tons of mite treatment on the market but one that I have used in the past that worked well was Reptile Relief. There is also Provent A Mite which works well too.