Sorry it was so soon over. Your wife did not give you the gift of time.
As for sleeping 5hrs per night, most people need 6-7 hours. What have you tried? When I was struggling, I shifted to being a consistent early morning (dawn) riser. I find daylight hours when you can be out and about easier to fill productively than late night hours. I also use asleep app called Pzizz when I expect sleep trouble. I’ll admit to alcohol (wine) some nights to sleep, but moderate exercise like a jog a few hours earlier worked much better and costs less. Audiobooks and textbooks help me, too.
