Revegging is a good way to continue a relationship with a plant that you are particularily fond of. The best way to go about this is to cut off all but the lowest buds. These buds will be the new site of growth when you put the plant into it's vegging cycle. I have found that the best way to handle the revegging it to leave about 8 sites in which the plant has an opportunity to regrow from. The plant may not grow from all 8 sites so it fives you a better probability for continued growth. When the plant begins to regrow the new growth will look very odd, just wait it out until you notice the normal growth pattern again. One thing you need to be especially careful of is the amount of growing tips that form. I suggest 4 main stems, if you don't prune, the plant may try to grow to many new shoots from the old buds and you will notice over crowding.