You may be able to overcome this by using a machine with a "ramp" feature. This setting allows you to start with low air pressure. The machine then automatically and slowly increases the air pressure to your prescribed setting as you fall asleep. Your doctor can adjust its rate.
If this feature doesn't help, talk with your doctor about changing to a device that automatically and constantly adjusts the pressure while you're sleeping. An example is a bi-level positive airway pressure (BPAP) machine that delivers more pressure when you breathe in (inhale) and less when you breathe out (exhale).