The LST is really paying off now as all of them getting real bushy.
Two of them are still in growing stage but one already started to flower, so I'm moving her in a different tent this week and start feeding with nutrition for flowering.
You are right in the window
Get the trichome microscope out and check trichomes.. pistils have nithing to do with rippening. Certain strain will have lots if white hair left at harvest sone strain will have hair falling off and that is just genetic. I can have have all hairs turn black in less then 24h 4 weeks into flowering . Hairs can help figurout the harvest window but all strains are unique.