I
itsus
attack of the clones!!!!!
You will have to put the plant into flowering in order for the most productive tops and branches to reveal themselves. You will also have to identify the growth that will become energy sinks. Any growth that you remove corresponds to a certain amount of energy that is lost. In order to minimize the loss, it's best to remove the less productive growth as soon as it is recognized.
What you really are looking for here is the middle road, or the perfect balance between the number of tops and yield.
is it ever too late to top a plant? i just entered flowering and am considering it