The biggest problem is the sleep position I have had all my life -- like a starfish; on my face. I try to sleep in other positions, but even when I can get to sleep, I wake up back in the usual. So I stay half awake to prevent the mask being pushed off. The over the nose is working better as the head gear does a better job of holding it in place. Plus this has a vent for the extra air to escape through.

Are we discussing the same machine? Mine is called a CPAP. Yours is an Apap? I was told my doctor set the levels.

Anyway thank you for your suggestions and your response. I will look into all you have suggested.

Cheers,
Dana

I am not sure what wakes me up, I just do and can't get back to sleep unless I take it off. My insomnia is rather strong. I do find similar to you that the machine decides it's time to exhale before my natural breathing wants to exhale. It's like it starts to suck the air out of my lungs. What you call "dropping out before done exhaling". The inhale seems a bit too much as air can go into my mouth/stomach which is irritating and also affects my wakefulness. Some setting to increase the time length of inhalation was increased to max, which helped a lot, but it still does it unless I take a large, faster breath - which is, of course, not natural. The min and max numbers were also adjusted but I don't remember what they are. Will call (yet again lol).