Here's what I'm currently doing with my OG 18 clone. Let her get a good growth spurt and topped early. let her recover and lst some branches, let her recover and top all the tallest branches "take clones with these if you want." This will even out the canopy, continue to manipulate the branches however wide you want her pull them down and keep topping each of the tallest branches.
Then put her in the flower cab right under a scrogg screen and give her a day or 2 and flip the switch! BaM you have a monster lol.