Your plants are too close to each other for a decent scrog grow at this point. But you can definitely benefit from a net, it can help you spread out the upper growth, to expose more budsites to light. If you do this, I would top them from multiple points. If you have the patience, you can top, veg for longer, achieve more branches and more ganja in the end.
Topping slows down the growth somewhat of course.
Good luck 👍