I was on an O2 concentrator 24/7 for almost six months while recovering from massive blood clots in both lungs (pulmonary emboli) caused by Covid. The next 3 months, it was night time only. My 02 saturation is in the mid to high 90's now without supplemental O2, day or night. It has been a long, slow recovery process, but I was not expected to leave intensive care alive a year ago. Night time O2 makes sleeping a lot easier and much more restful. Go for it!
