I’m having a lot of trouble breathing through my nose when using my cpap nasal pillows, I keep breathing through my mouth, any suggestions
Try putting your tongue on the roof of your mouth.
You also may want to try adjusting your starting air pressure on your machine. BiPAP machine might also help Probably something you take to the doc.
Talk to your doctor about using special tape made to fit over your mouth. I got mine on Amazon and it was an inexpensive fix.