Did you just hit the breeders low number? Like 7 if 7-9 weeks? Also, are you counting from 12/12 flip day or when flowers start forming? I think the breeders guidelines start when flowers appear, not on 12/12 flip day. I see a lot of white pistils still standing tall so I think you have a while to go, but that is just one piece of the puzzle. The trichomes look like they're fattening up and starting to cloud. Maybe start flush in two weeks?