My first time, with my OG, I pruned around the 2-3 week mark. This time, I pruned a little earlier, but found that they did continue to have some stretch.
If I were to do it again with the same strain I would wait until around day 12 to start removing and remove throughout day 18 or so.
I helped a friend prune one of his plants because he was scared to cut as much off as I like to, and that one lady was noticeably better in weight compared to the others.
Cheers dude im gonna prune my next crop, Ill be doing some Criticl mass next, 4x4 scrog should be fun thanks for anwering my question