look maybe you all do something different but when mine are at 6 inches, i pinch the top /right under the first node the pinch is no more than me taking two fingers (thumb and index ) and squeeze it til it gives a little.this does alot 1. the top slows down and the lower branches come out , then it swells where i pinched it and from there down it gets fatter and this allows more nutrients to the top next time i do this is at 1 foot and ill see the lower branches will be half way up to the top this last time makes all the lower branches catch up to the top and now ill have 8 to 16 tops

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Some will some won't so what grow pot