I remove the bottom 1/3 of my plant, and any very leggy branches, about 10 days before flower. This gives them a chance to recover before going to 12/12. Lollipopping is when u grow many colas on a plant. By cutting the bottom 1/3 the plant redirects its energy to the top 2/3 as well as better light penentration and BAM. Ive grow 2 OZ diesel bshes in 2 gal pots using this method. Seems to work quite well.