“I just can’t seem to breath normally with the mask until I fall asleep. I also have sinuses that sometimes just close up, making breathing with or without a CPAP mask tough”
Are using a nose-only mask?
Some people need a mask that allows them to breathe through the mouth.
Also, CPAP’s with humidifiers can help with the sinus congestion as well.
I use a machine with a humidifier, and a full face mask.