Hi TX, I take care of my father-in-law. 73, so lots of problems. He had COPD and emphasema before being dx with RCC, but now his cough has worsened, and just last night ran a temp of 100. I, too, wonder what this is really a sign of. We are due for a CT scan in a couple of weeks. When we contact the doc, they just shrug like his symptoms are normal, unfortunately. But when it is your loved one that you're seeing struggling to breathe, wheezing, and chilled (in Friendswood, Tx) it's very hard to take. My heart goes out to you.
I'm afraid that at some point my father-in-law will also refuse treatment. His disease has already spread so much that the docs have basically said palliative care. I am with him 24/7, and I know that it will get a lot worse.
Just because y'all are not seeking treatment, don't stop reaching out to people. Being alone in this is awful. Feel free to say anything, at least, to me. Good luck. Love is being sent your way.