Hmm.. Good question. You probably mean that when it starts to flower, you'll be wanting to switch back up, to like 18/6 or 20/4, right? But you are worried that it might stop flowering again? From what I understand, photos will revert back to veg, but I'm not sure if an auto that had to be forced into flower will act the same way.
I'd wait for an educated answer before you do, though. Too much messing around might make her hermie.
I'd wait for an educated answer before you do, though. Too much messing around might make her hermie.