AsNoriuanswered grow question 3 years ago I am big fan of pain for plants, just a bit sado mazo freak ;)))
But I never top plants, tried it, simple way to form even canopy, BUT ....
You loose few days or week of grow, mostly of top part were all efforts and energy of plant went, just to throw it away ????
SuperCroping, LST, leave tucking , small stem crushing and etc, there is milion ways to harm without step backs, so what for ??? Only because you read or saw ???
I grew not one and not ten, you have to see how plant grow without and with training to understand is it needed.
Toping is lazy fuck or clone resort, no other way.
You have nice girl, bent her before watering, expose side branches manually by lifting above fan leaves, so many things and options without castration ...
All the Best !