@kozm- If your doctor prescribed Anoro Ellipta it was for a specific reason and you would have to discuss this with him. I think that when we feel better we tend to think that we don't need the medications that have made us feel this way anymore. If you are feeling well and exercising and your breathing test came back as very good then I would say- isn't this telling you something? It's working!!

I'm thinking that perhaps you might not be breathing well enough. Do you do pursed-lip breathing, especially when you exercise? About 15-20 minutes prior to any exercise I use my rescue inhaler as a way of helping me breathe more easily. My pulmonologist suggested doing this and there is a difference.
https://www.anoro.com/

Why do you want to stop your medication? You began asking about SOB anxiety. How often are you experiencing these?