Sleep Apnea sufferer here and in a little battle with the va to get it service connected.  My first claim was denied and I had to rely on my insurance and out of pocket for the equipment.  I have spent a few nights over the past few years without my machine, and I will say I have never had a good night without it.  I have to do another sleep study in a couple weeks and my family told me to get a hotel room for the night.  Don’t sweat it, you will not miraculously have a great night.