Insanity question

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I really noticed a difference just in the first couple weeks. I lost some weight and some fat around the midsection, my abs looked like they were tightening up and my arms looked more defined. But in the 3rd week it's seemed to have tapered off a bit. I'm hoping that once I finish the 5th week of recovery and then get into the next section that I'll see continued physical improvement.

Thing is, I've noticed that I do have to still take quite a few breaks during the workouts still. I'm almost wondering if I should go through another round of the first 4 weeks. Anyone got any thoughts on that?