Suggestion: Try altering the furniture arraingement to optimize for CPAP operations.
About 1/3 of your life is in sleep mode, so YOU are worth it!
Find a stack if dictionaries or check with the hardware store and see if you can find something that will get the machine up where you can operate it.
The full beard may be problematic however.
I hear some folks go with a total face mask design for that.
I have no experience with those however...except for the old fashioned ones used for scuba diving.