Lyphoma On Backbone Alternative Therapies For Non-hodgkin's Lyphoma?

Alternative therapies for non-hodgkin's lyphoma? - lyphoma on backbone

My father was with follicular lymphoma, and thanks to the standard chemotherapy, diagnosed, and now receives an injection of antibodies at regular intervals. But I wonder if anyone knows of a natural or alternative treatments in order to prevent the return (eg, medicinal plants, exercise?). Appreciate any response, I thank you all.