Are you sure you're eating enough? I know that sounds counter-productive, but food is what our bodies use for fuel and regardless of how overweight you are, you still need to provide your body with SOME nutrition.
Carbs are our bodies first choice for energy ... I would imagine that you will start to adjust within the two week induction period, but I'm not sure. If you don't start to feel better soon, you might want to consider a plan that is similar, but provides a few more carbohydrates. Or, try 40g instead of 20g.
Also, if you usually drink quite a bit of soda or diet soda and have had to cut that out, your body might be having withdrawls from the lack of caffeine. Again, you should adjust within a week or two.
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Progress, not perfection
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when does the "OFF" feeling go away 
Linear Mode
