Are you growing in a closet? What are the dimensions of your grow space? The two taller plants you could tie each of the main branches outward, you'll have to keep adjusting them because the ends will keep seeking the light and growing upwards. It's like you want to grow the top parts at right angles for a while, until the other plants catch up in height. And that also lets more light down into the middle growth. The green twisty ties made for plants won't hurt them, just fashion a little 'hook' and put it around a stem. I'm a visual learner, I had no clue about defol even with a wonderful mentor on here, lots of bottom larf and popcorn but it still gets me high or makes butter. I harvested the tops of 3 plants, let the bottom halves grow a few weeks longer bc they were cheated of light, then I harvested the 3 plants' bottoms. I grew the 3 indica photos in a 2'x5'x8'H closet. I'd suggest reading a few threads of grow journals on here, watch Nebula's tutorials, and then watch YouTube videos tonight, esp about defoliation. Seems many growers do a defol 3 weeks into flower. It's hard to judge your plants' heights, I used to have a hard time getting a side pic because I had a bed behind me. Oh, the clips some growers use to train are called Binder Clips. I bought small ones, wish I'd gone up a size. HTH