Welcome to the forum Dr. Parker! You don't happen to have a network of doctors that are not anti-low-carb, do you? Specifically, do you know of one in St. Pete, FL? It's worth an ask ...

As for the drop out rate, I don't know what makes people drop out. I think the reason vaires with each person. It's definitely a more time-consuming way of eating. I myself haven't exactly stuck with it over the past two to three years but I've managed to maintain a status quo. I keep trying and it's not for lack of resolve (unless maybe it's a subconscious/indirect self-esteem issues; i.e., dont' stick with it because don't believe self is worth it?), feelings of deprivation, lack of planning, or the palatability of foods. *shrugs* Figuring out why we drop out or back off low-carb would probably require a mental health professional to dig deep or a lot of self-awareness on the individual's part.