Dry Mouth I'm A Mouth-breather (when I Sleep) And I Wake Up With A Dry Mouth. How To Fix This?

I'm a mouth-breather (when I sleep) and I wake up with a dry mouth. How to fix this? - dry mouth

I tried many nasal sprays, including nasonex and oceans, but none worked for me. I always wake up with a dry mouth and thus had swollen gums. Another terrible way to wake. Much appreciated.