hey there, the time the soil takes to dry doesn t really matter for your flush, but if your plant is drinking a bit less than usual it basically could mean now would be a good time to start the flush. In soil you want to aim for two weeks of plain water three weeks max. Will get you that smooth smoke. as a bonus what you can do is try to time your chop based on your humidity , <40 chop the next day 40-60 give it two three days after the last watering 60+ three days or more. This will help during the drying and eventually the cure, so you can get that top shelf. Hope this helps ! 🚀