im new to growing by my friend isnt, he grow one plant a year that gets 12 feet tall, he cuts most fan leafs as long as the node connected with it has two leafs that are formed not small or new. and the fan leaf stem is longer than an inch. i have been doing the same thing and have gotten AMAZING result i started a grow on the first of feb my 2 plants that i did that too( i have 6 i only did it to two of them to make sure because i wasnt sure myself) now those plants are about 3 ft tall and bushyyyyy way more than the other 4 i didnt do it to. thats just my 2 cents