the first decision is to reveg at all. drying your harvested bud minus the enitrety of the plant robs the bud from its natural dry process and you give up taste and smoothness. If you want to reveg then the next decision is where on the plant to cut. id say cut at the lowest node with a healthy fan leaf. Youve cut it? good! leave it in the light for 24/0 and the plant will start all over again, it will be about as long as it took last time to get to the flowering stage. you can reveg as many times as you want, and ive heard the crop gets better every time. hope i could help!