Well I can't see any nutrients given in the last 3 weeks on your diary. So I take it, that's organic? Also, she looks a few days into her 1st wk of flower, maybe a wk even. So she is done.
So, however you like to harvest. If she's an organic look up dry whole soil harvesting. Just before she's about to show signs of wanting water in her soil (leafs going limp) you can pull her out from the stem. And if there's soil still on the hard roots. Bag it and you can hang dry upside down.
Or whatever way you go about harvesting. But, my point is, you don't need flush and she's ready lol.
Good luck and nice diary..