Splitting the stem end of flowering period? Do or Don't?

I do it on my Sativa. Worked well especially on the strain that has tendency to keep on sprouting new pistils and fox tail. And I always do it for hemp-like CBD plants. What stem splitting did for me was to let the plant knows that it is time to die. Funny thing is that trichome that was already yellow started to clear up a couple of days after stem splitting. I think it is the last energy thing. New oil was produced and coated over old oxidized trichome. That convinced me. After that trichome cleared up for a couple of days, then the leaves started to die off. And it is harvest time. Opinion, do it just before harvest on slender Sativa. Don't do it on an auto. These plants are on the clock already and don't need help to get ripe. No need to do it on an Indica. I tried it on Northern Light and Kush types. Indica's just didn't seem to notice effect of stem spliting. May be the trunk was too big. And the water can by-pass to the root. Note, that I like the effect of land race Sativa and also grow some CBD. I also grow outside not in a tent. I think stem splitting helped with the long flowering types (14-16 weeks just flowering period). So, it work well for some but not all plants. Cheers