1 week into flowering now !!

MY two white widow ladies are 1 week into flowering now and already showing good signs of flowering on all branches, i transplanted into 2 foot pots yesterday looking tidy, i am wondering is it possible to turn back dark period to 13 or 14 to speed up ripening of the flowers? i know it will decrease yield, but is it worth it to speed it up a little?

I don't know that it would speed up flowering at all and it might really diminsh quantity. I would just stay with 12/12 and maybe just plan on harvesting a little early.