How much will a 6' plant yeild?

i was wondering if anyone knows aproxiamately how much a 6 foot plant will yeild in considering it was supercropped once and has a lot of branches serving as tops and is only 1 week in to flowering.

procrastinated on switching to 12/12 so she got pretty big. dont know how much more she will grow so im guessing i should start to lst. anyone know how far down i should bend her to keep from reaching the lights?

never can say how much the yield will be its impossible to say

better have some height available. 6ft going into bloom will most likely end up around 12 ft or better tall.