AsNoriuanswered grow question 3 years ago Never pinch anything if you already invested time in growing it, there is drastic ways - SuperCroping, taking top leaves away from top cola, that slows her development and gives chances for others to catch up.
Now you have huge space taken by plant, but this top will be a runner in general and will influence your canopy flatness and it won't bring you best light, distances will be a problem.
Just tie her down, if she is too matured, use SuperCroping technique.
Usually it's most tasty bud, would never chuck it away even if others would benefit a bit from it .
Happy Growing !!!