Mouth Tape Option

I recently gave up on my sleep apnea machine for a while because I woke up multiple times in the night with an extremely dry mouth. I have a full face apnea mask that fits correctly. My dentist told me that mouth breathing and dry mouth can cause some serious dental issues which has me concerned about continued use of my apnea machine. I've tried a variety of mouth tapes thinking this might help but the tape becomes dislodged and I still end up breathing (maybe not quite so much but..) through my mouth. I also wear a mouth guard to protect my teeth from clenching and grinding. Not sure if this affects my level of mouth breathing or not. Does anyone have any advice for a super duper mouth tape or suggestions for someone like me. Thanks very much!