Hold on, I'm not being a jack ass just want to ensure I got the correct info. I should stop the technique 2 to 3 weeks in veg or continue the technique up o to 2 to 3 week of flowering?
Stop 2-3 weeks before flower
WhspmEye, your question was either/or. Beanz420 assumed your question contained its answer, and guessed "or". The answer is neither.
What is recommended is: Stop topping
2 weeks before stretching starts. This is still in vegetative. Stretching lasts a week or two and always precedes flowering. So if you stop two weeks before stretching starts, this would be about 4 weeks before flowering. See Monkeygrinder's post above. At my location, stretching for sativas and mostly-sativas starts in early to mid-August, so I will top for the last time latest July 24. This two weeks is a reserve of veg time so the plants can recover before going into stretching.
I read the thread. This is great info. I always wondered how they did that.