Are you doing the program as written? 10 on and 5 off? Its kind of odd to be in "the 3rd week" of it just because it isn't a weekly program. I think I understand what you mean though.
I expect many people haven't done this program, myself included, so the advice you get will be minimal. The rep scemes swtich around so much and you are advised to used different variations of exercises, so as long as you are keeping the spirit of the program you are fine.
It's only 1 more week anyway, finish it out and take the 5 days off and see how it worked. After that It's probably a good idea to go to a different Waterbury program afterwards. Try the Waterbury Method if you want a recommendation.