keeping mother

first off i'v been growing other plants for 20 years (lots of bonsi) it took 3 trys but i finley have a female plant that was 12/12 from seed now i have moved her back to 18/6 light and she is doing well and starting to get back to veg i want to keep her as my mother but dont want a big plant can i root prune her like a bonsi plant to make a smaller plant that is heathy?
has anyone done this?

I have heard of this... you should take a clone and give it a try! i would worry about stressing it to the point of herming though...

that link is just what i was looking for
thanks

or you could pull a clone off her and after its got roots put it in a small pot so she gets root bound and stops growing.