If I am worried about supplement sensitivity, how would I start the Para 1, 2, and 3 slowly?

First off, listen to your intuition. And then start with Para 1, in a few days add Para 2, and a few days later add Para 3. I recommend starting with just one capsule of the Para 1 or 2 and just a few drops of Para 3. So it may take you a week or two to get up to full dosing.