From the Atkins site: "neither the Atkins shakes nor the bars were formulated to be total meal replacements. Atkins does not recommend the use of meal replacements for more than one meal a day; instead, it is important to eat whole, unprocessed foods to learn wholesome eating habits."

I noticed you're trying Atkins KISS. Perhaps you need to give that a little more time?

Are there any other factors that could be slowing you down, like medications?