If you've already topped, it's kinda mute,... but bend the main stalk off to the side and tie it down to train,... just doing this will induce accelerated growth in the branches, and bending the branches out to the side has the same effect. This is LST or Low Stress Training.

Topping is very stressful and slows new growth while the plant figures out what to do, over topping will create a canopy with too much vegetation in the center, and loose low quality buds when flowered, unless you prune out unwanted new growth.

My current SCROG was never topped, just trained. I'm going to start working some new girls for this here soon,.... well 2 weeks ago!