First off 6 weeks is NO WHERE NEAR the time it takes for Accutane to take effect.
You'll probally make it worse by doing that. I'd consider taking it for 4-5 months depending on the severity of your Acne. And remember, Accutane does'nt cure Acne, it sends it into a remission that can last anwhere from a few months to a year.
Why don't you eat healthy while your on Accutane? That way your Acne can be attacked from both sides of the spectrum, the scientific side and the homeopathic side.