I usually always top or FIM my plants right after the start of the third node to encourage extremely early branching. It works, on all the bagseed grows. I'm not sure what phenotypes [ from indica or sativa ] is causing them to take well to the topping, but what I do know is after topping every growth tip that came, one time each, I managed to have a plant with seven healthy tops ready to be flowered in less than a month and a half.