I am sure I need a CPAC according to doctors, but choose not to. The pillows work fine.

But I would be surprised if you do not eat dairy, or too much of it, because it causes mucous. If I have any mucous, I immediately eliminate all. I had covid real bad, and have no doubt that I would not be alive today if I had mucous and a cough in addition to all the other. Eliminating dairy immediately will eliminate mucous, and subsequent congestion and pneumonia.