HST them. (Grabbing the point of the stem where you want bent, fingers flat, or however you want to node to go, break the membrane and bend so it sits on its fold, you'll need to keep them tied down also, as they'll grow back up with knuckles)
Also look up SuperCropping it'll help you understand how to control height. Topping is for node growth. Not necessarily accredited for height. Yes, it curve a main cola, but with long enuf veg, you'll quickly have many high nodes
If you Top. You'll need 2-3 more weeks for them to develop..
If you HST your main tops you're concerned about. It's the only thing that'll curve the height. Supercrop HST will be your way to go bud.