I had a robotic lobectomy of my lower left lobe a month ago due to adenocarcinoma also at 75. We are very similar.. I also have long covid which is slowing down my healing and kept me in the hospital for 5 days. A positive attitude is everythng. A good support system also helps. I still have some pain...nerve endings are still healing. You may not have that problem. I hope your surgery goes well. I had a great thoracic surgeon from Mayo and he pointed out the same advantages that your surgeon did. I practiced deep breathing to help me relax the last 2 weeks before. It helped!