you could top your plant when its about 4'' tall or the 4th node and it will be shorter and busyer...or don't top at all and just LST the plant ...tie it down 90 degrees. to your pot its in or something and it will let all the lower growth start to grow towards the light...and make more tops...you just have to keep tieing and bending...but you end up with a big bush and the whole plant is the same hieght everywhere..which makes the light more evenly destributed over the plant..other words the top of the plant don't get all the light...