The idea with LST, unlike topping,you don’t cut anything. Yes, when the plant is maybe three weeks, enough to work with, I simply poke a hole near the rim of the felt pot with an ice pick, and thread the end of a pipe cleaner (Walmart craft calls them fuzzy sticks), and form a gentle cane like hook to hold the plant down. Over about three weeks time, I keep adjusting and adding restraints, until the plant begins to flower. Once it starts to flower, the stem will get stiff enough to undo the ties and let it go. By then the magic has happened. I’m not a botanist, but essentially by tying the topmost flower site just a skinny bit lower than the next bud sites, the hormones get fooled, and sent to the secondaries instead of the natural cola. I literally think it’s as simple as fooling it into rising through the plant to the highest level. Anyway, yes, you end up with secondary colas that can match or exceed the original top. My short, little plant is a good example. The natural top is the second highest stalk at maturity. Now if we were running photos instead of autos, there would be time to tie and stimulate multiple colas. But with autos, time is the limiting factor.
You’ve done the hardest learning, keeping the little s**ts alive. Now to maximize return for the invested time…