What I do is not take any leaves off unless i pull on them and they come off.

Now just before I flower 5 days before I will pull clones off bottom of plant and I do trim "to the stem" 1/4 way up plant and my plants are usually 30inch tall when I force into flower" "and 1/4 the way up each branch coming off the main stem 1/2 way up" This will force plant to grow up and will force all the plants energy into the bud sites "will yeild a lot more"

But again I DO NOT take off any BIG FANS that are on top of plant

Hope this helps???

Pic below is a Martian Mean Green at 1 week of flower