I am happy to see that you two are in synch and that you look after each other so closely. Have either of you been tested for obstructive or central sleep apnea? It was the last test for me when all others were ruled out. I went to an over night sleep lab and had a full polysomnography. That revealed that I have severe OSA. Surprised the heck outta me, but it's being controlled very well by a CPAP machine.