I talke Advair 2 times daily and Spriva once a day. Just found out that my air intake goes down to 83 during the night. Should I be taking Advair in the morning, Spriva in the afternoon and then Advair again 12 hours after first time. I have COPD and have just been told I need to use oxygen at night. Will adjusting my meds make a difference in my air intake during the night?