I did a SOG grow, my very first grow, it was what I read up on. I had 6 plants, in a rapid HYdro system with feeder tubes, and I started 12/12 at two weeks. I got three females. After 9 more weeks of Flowering, I got about 3 ounces from my three small plants.
Then I met a Grower-Mod on here named fdd2blk. He is highly opinionated, and He knows his Growing too, he's a soil man, and leans strongly toward HID lights and frowns upon CFL growing. He is probably the most knowledgable SOIL grower here or anywhere.
He taught me something very important back then. That it is not logical, or wise or smart to make babies have babies and if you start plants FLOWERING at an early age, that is what you are doing, making babies have babies. It is much wiser and smarter and better to let you babies become women, or let them mature first, before you force them to make babies.
Consider a ten year old child, that is not an adult, getting pregnant and having a baby. Not only does it really stress the child, the new baby will be premature, deformed, and probably just messed up. Let that child grow up and mature first, then let the adult have a baby. Same theory applies to pot. Let that plant be a maute adult first, then 12/12 it.
Now I get an average of 3 + ounces per plant, after VEGGING 5 weeks in HYDRO.