Boy,
Don't hesitate to do it. Don't do HPI but fecal transplants using enemas. Saline water plus warm donor feces. Keep prepared yourself with enemas with clear distilled water the same day. Don't allow the donor feces cool off. It has to be a quick procedure. Try to do it 3 or 4 continue days. Don't ask me more. It is not complicated. The human flora is so powerful implanting that it will do in any form. The most important is introduce to your colon the warm donor feces diluted in distilled or purified water. That is it.
Jorge.