Losing "only" 7 lbs in just over two weeks is not a bad outcome. That diet is not supported by solid science, and isn't a part of the SP plan, so unfortunately we can't really provide much feedback for you.
Perhaps shelve the faddish "diet" and stick to healthy living for life?
You can't "cheat" on a healthy lifestyle, because there's room for everything!
Stop Dieting and Start Living! www.sparkpeople.com/resource/motivation_ar