Given the "vaccine-like" effect that hemotherapy has, it maye be worth it to look more into it, if you find a willing professional.
Autohemotherapy became part of medical history until recently which is probably why I haven't stumbled upon hepatitis C and autohemotherapy. I think that autohemotherapy was always used by some practitioners (e.g. South America, some European countries) and they might have information available if they used it in Hepatitis C.
In the past, it was used within the context of infectious diseases as an immune booster, including probably blood infections.