Hi. I understand that COPD is a progressive disease and we can slow progression by not smoking, exercising, eating healthy, taking meds, etc. I am just wondering is it possible to not progress through the stages of the disease? If we look after our lungs as best as we can, can we remain where we are or is it going to get worse regardless? I know a lot of people here are at a more advanced stage than me currently and may require oxygen, etc . Have people gone from mild to severe even by stopping smoking and doing all they can to slow progression and look after their lungs?