No, I don't limit this activity in veg... if I see a growth tip that has risen up to the point that I can cleanly chop it, and it is either dominant or about to become dominant, off with its head. I am not worried about stressing a vegging plant, because I know that in veg the plant just sloughs off all of this abuse and just keeps on going. Stress in veg is over rated and stressed over way too much. It is flower when you need to worry about stress.
In veg, plants adapt. In flower, they react. - Emilya