Your past Medical History is very encouraging. In spite of so many serious problems and multiple surgeries, still having reasonably good health and excellent vital parameters is nothing short of a miracle . I suggest you should consult your Surgeon who did SDH Surgery for you and follow his advice. I wonder if a single Doctor on Tele-consultation will be able to give you any better advice, considering that during Tele-consultation we don't have the privilege of doing a physical examination of the patient.