Nice plants man
3 week flush is a long time.. I agree with flushing, here’s why;
Peeps say your starving the plant when it’s packing on most of its weight etc..
Thing is it will eat itself, like we do when we have less calories coming in and burning off more. Our bodies consume protein/fat etc.
The plant will use its own resources left in its leaves to continue flowering. So it’s not actually ‘starving’ per say.
However. I do see that the timing is critical. No food for too long a period will deminish harvest. This is why most say don’t flush, getting that timing wrong is a fine line.
It’s the buds we’re after.. not the leaves. As long as the plant has those nutrients (which it does) it will continue to mature.
I’d personal flush 1-2 weeks before if using synthetic nutes. Organic? Well probably get away with no flushing, like nature
Just my observation..