Those doses sound about right for you. How much prazi have you tried in total Hanover how many days?
My doc said, and medical journals also generally state, that Prazi is generally tolerated quite well after the stuff gets absorbed, with the thing that makes you vomit mainly being the lingering taste (I can personally attest to this after vomiting once on it). So, as I said try drinking more water and some food with it. I found the 3 consecutive days of Prazi dosing on the ICU protocol quite hard going, but just pushed myself to take it and kept telling myself that 3 days isn't so long.
It might also just be an initial die-off reaction after the initial doses. With most parasites these lessen over time.