To Flush Or Not To Flush

You don't ever flush soil, my friend....that's bro science. You only flush DWC or RDWC, hydroponics system, etc...and that's only for 24 hours. You're plant won't uptake nutrients that it can't process regardless of them being in the soil or not. So now your plant needs nutrients but they have been leached out of your soil. So yeah, I would give her some more food if you still have clear trichomes and then slowly taper her down.

Its upto you she does look ready but you can flower for upto like 12 weeks if you please they will only gain more trichomes and mature the ones she already has she will also get denser in the late flowering weeks just make sure you dont leave it too long :) best of luck buddy and enjoy your harvest :)