I never had the same results as the first round. I tried many rounds.
Yes. The first will always be the most dramatic. For most people it's the first time they "clean house" so to speak. Subsequent rounds are rarely as effective. For those that have similar losses it's generally because they have a lot of weight to release. And by that I mean more than 75 pounds. At least that's what I see.
Subsequent rounds work, just not as dramatically.
I would suggest adding more lean protein instead of peanut butter. I'd be shocked if that wasn't slowing things down too. You're burning fat on this protocol, and if you want to maximize weight loss you want the fat you burn to be from your body, not dietary. That's why it's lowfat.
Electrolyte imbalances are often quite in your face. Heart irregularities (strange beats, feeling like it's racing, skipping beats etc.) cramping (headaches, charley horses things like that) spasms, dizziness, feeling excessively thirsty, constipation, etc.