I have always just trimmed up the plants towards the end of the stretch period at the beginning of flower and then just removes a few leaves here and there toward the end of the grow, depending on the strain and what had to be removed, on my orange gasm this grow trimmed about 10 days into flower, removed lower stuff leaves etc. and now at week 5 they are solid full leaf, so I took one out 2 days ago and trimmed the shit out of it, just taking leaf. but i took a lot, I mean a lot. that was 2 days ago the plant responded like a champ, it looks much better, obviously getting much more light down through it, but the thing is, I can actually see bigger bud growth, like a fair bit , compared to the other 9 I didn't do. very well maybe just the strain of plant, but i'm going to do another gasm to see how it reacts,