hello, i am in the last week of flowering, and I am having a panic over harvesting, the thing is that I want too harvest for like 70% red pistils , but the problem as dumb as it is , how do i know it;s 70 % like not 60 % , i know it;s dumb,just to make sure, but do i count the calyxes for a bud the calyxes with red pistils and the one with white pistils, any precise way?...