what i have now of the mother is from a clone cut from the original mother in flower. same effect, kinda sets the plant growth free. to reveg a plant you flowered and harvested -
leave the bottom/middle bottom branches with bud stalks on plant, maybe like 4 branches or whatever.
cut the plant when you harvest (from 12/12 lighting), above the branches you want to keep. leave the plant and the leftover stalk while you dry upper 3/4 of her.
get the remaining plant out of its pot or bag, and break out a katana or whatever you got. quarter the root ball, so if its a circular root ball, youll end up with a square. you cut the outermost dead root material off.
repot with some high N soil, in a bigger container (i use 7 gal bags), filling in the gaps where you sliced the ball down on sides. tamp tamp tamp.
feed with lots of N. too much by any normal standard. and shock treatment, B1 or
superthrive or mychos or all of the above.
move into your veg room (18/6 lighting), and keep a lazy eye on her. feed with high N for a good few weeks, full strength. dont overdo it of course, its just easier to not overfert with revegs.
new finger leaves will begin growing out of buds, and gradually plant becomes a monster. monstercropping.
and you can check my method with whatever monstercropping method is covered anywhere else. nothing that crazy.
peace