I really think your body just needs to adjust. The same thing happened to me, lost 11 pounds in the first 15 days. I also stay just on induction foods and have never had a shake or bar. I did drop cheese when after 3 1/2 weeks later I still hadn't lost anymore weight. Then I lost 4 lbs during week 6. Hang in there, I bet it will happen. I have alot of weight to lose too and am very impatient.