Moi,
You're body is telling you something by the low energy. The first thing that came to mind is if you are getting enough food. What times are you eating? And how much?

We're used to being controlled by high insulin levels and may not recognize plain hunger for what it is.

In my opinion make sure that you are eating 2CMs and RM and have them spread out through the day to supply a constant energy source. Post your menu with meal times here and let one of the experts give you their opinion.

I don't know if you were doing lowcarb before this, but if you weren't maybe your body is just adjusting to the change. If you eat high carb for a few days and you're energy comes back then you have your answer, and can add more carbs to the RM.

Nancy