16/8 last two weeks

hi
i only have one growroom and im harvesting in about 3 weeks. i also just planted some new beans and because i dont want them to go 12/12 right away i was wondering whether the last week or last 2 weeks of my other plants i could go back to 16/8. will this lower my yield/quality of the plants i am harvesting soon?

yeah dont do it itll be bad trust meh.

how about just the last week? ive heard people say that had benefits, or maybe changing the cycle from 12 12 to 14 10 or so???

ya i wouldn't do it you can severely diminish your yield and smokeability