Harvesting?

I would advise flushing her for at least 3 weaks aswell because as idgaf said she looks really overfed, good luck and enjoy your harvest :)

she's looking very dark and quite overfertilized.. EC of 2.8 is quite heavy (if not too much) for hydro already, but definitely way too high for soil. there's quite a bit of tip-burn as well, so i would already start lowering the amount you feed her right away, as flushing will most likely take quite a bit longer, as heavily fertilized as she is.. under a normal feeding rhythm on soil you'd normally say "flush the last two weeks", but as dark green as she is, you might want to add another week to get all deposits out of the medium, and have the plant use what's left in her.. if you're in flowering week 6 now, and she'll take 9 to 11 weeks of flowering total, you could start flushing now.. If Bloombuster is right with the incorrect counting, then i'd definitely start flushing now.. for upcoming grows, i suggest reading this guide about fertilization in soil: https://www.mandalaseeds.com/Guides/Fertilizing-Smart-Guide