Newer asthmatic here… my doc put me on Dulera 200 since last August with great results, but it was expensive out of pocket so I asked to be switched to something my insurance covered. I just switched to Advair Diskus 200 last week, and my shortness of breath has started to return. Is there an adjustment period to the new medicine, or perhaps I am not using the diskus inhaler as effectively yet? Any thoughts? Thank you.