The only way to tell is the trichomes , but i would wait like even 2 to three more weeks if i have to guess, but again, check the trichomes just to be sure, you're looking for all milky , no clears, few ambers for max THC potency, beyond that you can get some more ambers to "balance" the high, but yeah the main idea is to check the trichomes so that you dont harvest with any of the trichomes clear . Hope this helps ! 🚀