I have just received the machine and had a go, fairly uncomfortable so far. I'm committed to using it but can anyone tell me how long they took to get comfortable with it? All my sleep trial, diagnosis etc has been remote/on the phone and I do have a phone call booked for advice in 10 days but so far it wakes me up, can't see how I'll be able to sleep with it. Also I usually sleep on my front, how's that going to work?