By the looks of the pictures you have attached, there going to be harvested separate times because the plants in the first 6 pictures those plants have white pistils still and they sticking out(pointy), they still got weeks to go, after a week or 2 you’ll notice pistils start curling in and calyxes getting fatter, just stick to a light feed for those plants and let em keep doing their thing and tryda give em some eggshell tea I can tell they need some calcium, but be aware your late in flower so only use 10 eggshells, 10 per gallon 5 per half gallon, boil eggshells in water and let sit till cool then use! Now those other plants in picture 7 and 8 look like there a week and half away from harvest, just feed them one last time, and remember not to harvest with super wet soil! Like a grower once told me, Overwatering slows growth remember that!! Also you got a lot of aciditiy in your soil so you might wanna use a bit molasses or honey. Nothing too crazy but like I said you pretty late in flower so be careful what you feeding plants! Overall, you got to let em do there thing bc your alr too late in flower, Hope I could help! Good luck, btw buds lookin nice, only issue is the burnt leaves be aware it could mess your yields quality!