Terry's advice in post #9 is good for you. I certainly would not dummy down your machine at this point by going to straight CPAP. I see you're still using ramp? Be aware that you could experience an apnea event while in ramp that you would not experience once at therapy levels. Not a big problem, except it could wake you up. If you're going to keep ramp on, I would set the starting ramp pressure up some, and lower the time it stays in ramp.
The other thing about waking up a couple or more times a night: That's not uncommon, and it really doesn't necessarily have any impact on the value of our overnight sleep. What sometimes happens is you get into a great, restful sleep place, then your cute little brain thing thinks "what's wrong with this picture? I'm not used to sleeping well. I think I should wake up and look around the cave real quick." That's a primitive sort of reaction and one that subsides over time as your body and your cute little brain thing gets used to the "new you."