Hi! Welcome to the group. This is a very friendly, supportive site.
I also have very severe emphysema, and it is limiting. However, I have decided to do what I ca do. I know I can't run up and down the stairs, so I take them slowly. Also, I have been walking on a treadmill, and that has really helped my energy and stamina. I am up to a magnificent 8 minutes at a time, headed for whatever I can get to.
I haven't been out much this past year, but am starting to cautiously venture out again. Are you able to do any walking? If you try a little exercise, you may find it helps. Let me know.