After looking at your diary and seeing the flower pictures, you still have another 3-4 weeks to go.
Once there are 98-99% brown pistils/hairs, you will be entering the harvest zone.
With only 4 weeks of flowering so far, you are only about half way there.
Always check the trichomes on the calyxes/buds, the trichomes on the leaves mature earlier and can give a false impression.