I’ve been lurking on here for the past few weeks ever since I suspected I was having apneas – and its been super helpful. I took a home sleep test and was diagnosed with 17.1 AHI and 22.5 RDI, my O2 fell to 87% during the test as well. I received my AirSense 10 + F30i mask yesterday and wore it for an hour before bed just to get used it and passed out. I woke up at 2:30AM feeling like I slept for 20+ hours. I was able to go back to sleep and woke up before my alarm for the first time in years. Loaded my data into OSCAR, 1.1 AHI. Thanks for the great info everyone, it made a big difference in getting used to this and it was only my first night. Can’t wait to see how I feel after a few weeks.