these meds are turning my mouth into the sahara desert

"chewing sugar-free gum helped me a lot during the day"

Gum definitely helps short-term, but honestly, I found it made my jaw sore after a while. I ended up switching to sugar-free lozenges instead - less chewing and they seemed to last longer for me. Also, about the humidifier...I tried one too, but didn't notice much difference personally. Maybe it depends on your room size or climate? Either way, dry mouth sucks big time...hope you find something that works soon.

Since the dryness is worst at night, an oral moisturizing gel may be worth considering: it can coat the mouth longer than a sip of water. Check the label for a sugar-free option, since dry mouth can make teeth more vulnerable to cavities.