xisnow, it's hard to find 'rules' because it's an experiment that someone came up with on their own and tried; it's not part of any published plan out there. Because of that, it's only natural that nearly everyone has their own set of rules for doing something like this.
IMO, I don't recommend doing this if you are not honestly and truly stalled meaning no loss of pounds OR inches for a period of 4-6 weeks and you have ruled out all other possible reasons for slow/no weight loss first. See this thread for more information on that.
Reading through the post above, it occurs to me that what they are suggesting is a "KISS" (keep it simple, sweetie) version of Atkins...whole foods, watch portion sizes and skip the low carb sweets and treats and I think you'd be far better off going that route rather than resorting to something this extreme first.