Ditto what has been said. Try to keep as much leaf material on the plant as possible... the explosive growth where the little budlets are left on will reward you when they explode in new bushy growth. I have had marginal results trying to clone a cutting when it is flowering. It would probably be easier to root a branch instead of rooting a cutting during flowering. If you re-veg the plant 1st, you will have both a established mother plant, and a lot easier time taking clones or cuttings. I have had some plants that just wouldn't revert, and instead just sat there for a month before slowly dying to the core. Sativa and Sativa hybrids seem to be more responsive to re-vegging. Indica strains are the ones that have given me difficulty in the past.