May I suggest taking a cutting off of one of your lower branches which is a smaller bud. Beuffer is right it will be a mess when it starts to regrow from the bud you more than likely will have some pruning to do to have a manageable plant. I have cloned all the way up the last two weeks just to see what happens, it takes longer to root and you certainly won't have the success rate you do preflower. Of course that is the fun part about trying and learning what these plants can do. The layering idea is a good idea, I haven't tried that during flower before. Good Luck and Happy Growing