forcing

I'm guessing you mean 20/4. You can, it won't make them finish that much faster and you will have small flowers if you do this before they bulk up. The plant still needs light to develop buds and 4h of light a day will severely impact your yield. If their flowers have already bulked up, then it may be worth a try. If they are still early in flower, I would not suggest it. Rather be patient.

almost keeled at the no. reducing the photoperiod will indeed help it finish faster. yes, yes bro, that is a yes....from a photoperiod researcher, a resounding yes if you understand the basics of the plant the nuance here is kind of deep, with the 12/12 just being a bastardized rule of thumb (and every plant having a specific number which may or may not correspond to 12 hours of darkness for their pfr cycle to trigger flowering). this is science, use it my friend, because not everyone on the site is 👽👽👽 a photoperiod shortening is HOW you indicate an ending season...cold spells and cold water and crying in front of the plants for vibes or whatever is just a stressor. The plant is going to be looking for photoperiod clues to know how long it has left at a maximum unless you run until ripe on stem. short photoperiod = dying very soon just know your math for lights is gonna change, the intensity will change, making your water consumption likely change, meaning nutes might change....just adjust accordingly and shorten the photoperiod if you're in a rush.

Yes you can i only vegetate photoperiods For 1/2 weeks then switch to flower

No!.. I just read your on 18/6 from 3 days ago... reducing light cycle won't help finish faster.. some of your plants are ready some are not. They look to be full of Nitrogen I bet those buds smell like apples.. Enjoy your harvest 💚👍.

What’s 24/4? If it’s from seed then the plant won’t flower until it’s mature enough. Flipping to 12/12 will flower it as soon as it’s ready. If it’s from clone then it will flower as soon as you flip to 12/12