I would let them vegetate longer,
let them build more roots. But you can start topping them now. and you dont have to follow any schedule what first what theen... just follow thee plant.. she shows you what is next.
It was good to rise the Lights, to make them reach for the light, this way it iis easier to train them-----
just start topping them and let them grow again... if you feel like the growpot is filled with roots,,, transplant her... just give her alittle break inbetween every training.