Yea man it works you just gotta leave as much as possible minimum 1 branch with the bud on it and some fan leaves, just leave all of your popcorn bud ideally... the whole lower half of the plant. Reveg works pretty good actually, a lot of people knock it cause it can take a lil bit longer but its really not that much longer. It kind of like growing from seed your just adding a new stage to the overall process...no reason not to do it in an emergency if you need to save genetics. Basically just harvest your main cola(s) and then put her back under 18/6