When do you start counting the weeks as flowering? When the first pre flowers show? Or only once the first pistils are showing on the top bud?
Mine has some pre flowers here and there but is not covered in them.
when you flip to 12/12. that's day 1 of flower after first long dark cycle.
Autoflowers are a guess based on using what we can see. If you want to compare apples to apples you need to guess from the first sight of preflowers. Probably in flower 5-10 days prior depending on your eyesight. this would be comparable to a photoperiod and should be of similar length, because autoflowers not "faster" growers. they just turn to flower phase on their own.
Id say that deff in flower so if your asking on when to switch your nutrients it's now or when u took that pic or saw what was in the Pic in person. Its flower time for that girl . On the latter I count flower cycle as the day I see pistil comming out that calyx 1st one I notice starts the cycle for me im fully autoflower tho so if your talking photoperuod then id say it's safe to call it when u call it as in switch lights to 12/12 ...?
Pre flowers is not flowering...once there are small tufts of pistils is when the plant is actually flowering, usually 2 weeks or so after the appearance of the pre flowers.
I don't really consider a plant in flower until the tops show obvious signs of transition. Preflowers can show up in mature plants in veg state. It's really irrelevant either way, the plant's gonna do what it's gonna do however we decide to classify it.