@sharonednaramsey Many years ago now, before 7% saline nebs, when I complained to my pulmonologist's nurse that airway clearance was taking too long and my lungs were never "clear enough ", she told me to "stop it."

She explained that I was actually "part of the problem" by trying too hard. She said after nebulizing albuterol, I should spend no more than 20-30 minutes using the Aerobika, postural drainage or huff coughing to clear. Also, not every session would be perfect, or even productive. Forcing continued effort was irritating my throat, lungs and vocal chords. Trying to get to "empty" would never work because our lungs are meant to be "bathed" in mucus.
I went home and followed her directions for a few weeks (while I was quite ill battling MAC and pseudomonas.) Wow! I still got out a lot of gunk, but the volume decreased dramatically, my sore throat went away, and I started breathing easier.

Maybe you can reduce tour stress by doing less?