Absolutely. you're plants are big enough to be topped or pinched now. There's various ways of doing it, but if you sever the new growth at the very top of your plant it will stop growing up and start growing out. I used the FIM technique and it works brilliantly for making pot bush's. Try cutting about 90% of the newest leaf formation as it sprouts out of the top of your plant. This will result in multiple tops that you can then top again to make multiple healthy clones. You can also look up how to super crop, top, pinch, and bend you plants to accomplish the same thing. good luck
