Dr. Sheba Roy is the Naturopathic MD. She's located in Michigan. Our oncologist at Henry Ford Hospital recommended her. Maybe your Mayo oncologist has a local recommendation. I'm not sure but maybe Dr. Roy would see patients remotely. If you're interested her web-site is https://www.aimnatural.org/.
Recently, I listened to a series put on by Hay House called Radical Remissions. Kelly Turner is the driving forced behind Radical Remissions. She has studied patients, most are cancer-related but not all, to determine what factors led to their surviving and thriving when the statistics aren't promising. When the patient has a low survival rate under 5 years. She found many factors including as you would expect exercise, diet, nutrition, and supplements to be important. But also other factors too. Maybe check that out for hope and inspiration. I'm always looking for that myself.