TY, TS, for the tips.
Assume that "but that's only been my experience" is appended to all my advice; IOW, do not take it for Gospel.
I wont be able to change the lighting from 12/12 until I harvest the ATF seeds.
That'll be your biggest handicap. If I was in that situation, I'd be dragging the candidate out of the grow space at every lights-off to whichever part of your home is best illuminated. An extremely stretched/lanky revegged plant is better than one that failed to reenter the vegetative phase, methinks.