Partial/staggered harvest

So I'm growing 6 different strains under a 600w hps in which was a mistake! (Some stretched and reacted to my nutes better then others) anyways a couple of them reallly stretched and I didn't lollipop any of the plants at all like an idiot.. it's a crap out that my top nugs look nice but everything under is all pop corn nugs! I harvested one of my plants today and it was horrible I feel like i got less then an ounce from it with mainly popcorn nugs and it was 2ft tall and 1.5ftwide . My question is before I harvest everything next week could I harvest the top nugs and let the bottoms one swell/ripen for another week? if I do this I'd be cutting the branches 1/3rd of the way down and let the popcorn nugs get blasted with intense light!

Does anyone have experience with this?

Would the popcorn nugs swell up and get bigger or would it stay the same size and just have the thc overripened?

they may swell a bit for you. I dont bother. With a perpetual harvesting schedule I have to take the whole plant
when its time. I do lollipop before flower just so I dont have to feel the pain of discarding the undergrowth.
I also flower under 600hps, a couple k hps and finish under mh with no issues.
could be other things causing yours, like heat, RH, air flow, etc. they only grow to their weakest resource.
you likely wont ever bum out about "thc over ripeness), just a guess, I never, ever regretted leaving my plant for another week or so.

nutes? ppm?, grow style?
temps?
rh?
strains?
pics?