You're not eating enough. This is not enough food to sustain you and your body will freak out and hold on to your weight if you don't provide it with enough nutrition.
If you're in SB Phase I, then you need to follow the diet guidelines in the book. From what I recall from my SB days you're supposed to have lots of protein and at least 2 cups of veggies with each meal. A couple of slices of tomato and 1/2 a cup of V8 doesn't quite fulfill that requirement.
Where's your breakfast? 1 oz of laughing cow cheese and 1/2 cup of V8 is NOT breakfast.
The only meal that looks even near to reasonable to me is dinner - and you should be having a LARGE salad, not a small one. Lots of veggies. 2 cups or more.
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