It's just that it's been my experience that the more OP that you do, the more comprehensive the results.
But, hey, far be it from me to dare to advise an American on what to do. It's WONDERFUL if you are obtaining such satisfactory results from so few OPs. I envy you.
Try adding Vamana Dhauti each second morning. And Sanka Praksalana once every 6 weeks.