Hi there Little Green Fingers, i'm actually keeping high humidity throughout flower with no issues. but i work for it lol. so here's my secret : add benecial biologicals to your grow as you're doing it. you can even spray them on. There is bacilus thuriengiensis for example that's really great to keep mold away. For your root zone consider innoculating with Trichoderma Harzianum . This is the way to control the potential mold issues. However the worst part is the drying, you absolutely need to figure that out because if you're not bud washing or in a pretty sterile environment, problems can happen quickly. Hope this helps ! ๐