Hey 👋
Hard to say without seeing trichomes, but from what I see you should have at least 3 weeks until harvest. Once your pistils start getting brown you have the indication that you are close to harvesting point.
But still the best method to define the harvesting point is to watch your trichomes and harvest at the point you like your smoke… e.g. me for example I harvest a little earlier to get THC highest level… meaning most of the trichomes are milky, with the least amber. Others harvest 20% amber to get higher yield…
Nevertheless, guess you still have some time to wait.
Hope this helped 👊🍀👋