Hi 🙋♂️
Unfortunately, it's almost impossible to say based on the shared pictures.. nonetheless, I understand it as follows:
You want a harvest period at the THC peak — you need to harvest when the largest possible portion of your trichomes is milky, with the smallest possible amount of amber ones, but also the smallest possible amount of clear trichomes. Apparently, you haven't reached the period yet, which usually announces itself when about 50-60% of your "hairs" have turned orange.
Regarding flushing: definitely! Then I would maybe start doing that, the plant can consume itself & go into autumn… as little chlorophyll as possible, then it smokes better ;)
It's not a "Yes, No... 2 weeks" answer, but check the trichomes on the plant and decide for yourself when the optimal time is according to your preferences :)
Hope it helps, good luck & good smoke 🤞🏽👊👌