Great question, topping your plant 3 times will give you 8 extra bud sites for big colas to develop. This helps keep the height down and creates a really bushy plant. We are not currently adjusting the veg time in our recipes due to topping, so you will continue on the regular schedule. Most schedules have germination/vegetative growth of about 40 days before flipping to flower. If I add too much time to the vegetative stage, you will grow right out of the unit!