That sounds like a balancing problem. You want to raise daytime humidity, but not to the point of 60-70%. I would try misting during the day, but not as much as during the night (E.g. instead of 2 min., try misting for 1 min.). You may have to experiment a little, as with basking lights. Temporary spikes in humidity should be OK—it's the averages we should be shooting for.