When the hairs turn orange the ovula, which is where the hairs come from( and also where the seed would go if it were pollinated) starts to swell making the bud thick, when you first see hairs let them die(orange) and let it happen again to the new hairy growth( hence second turning) , let that go aroange and the trichromes should be everywhere by then(week 8) all those trichromes on the hairs and leaves and the ovula start to get large,...

wait for 7-10 weeks minimum