Also high mark, also had to have 6 months. I said the exact same thing, if I could follow this low carb diet and I had that much control I wouldn't need the surgery! I even had six months worth of weights and a Dr. Saying I was following a low glycemic diet the whole time, and they wouldn't approve that. They wanted six months with the bariatric unit, going and getting weighed once a month. Half the time I just made up half the entries to the journal, but I did try my best. I lost 20 pounds, and I could not lose much more or I may become ineligable.
The six months will fly by, good luck, just do whatever you can do. Do your best!