I can’t sleep!

I know many of you are struggling with crippling fatigue and sleeping up to 15 hours a day. I’m the opposite. I had COVID in Feb. 23 and since then am constantly short of breath, had a hypertensive crisis, developed complete heart block, necessitating a pacemaker and have bouts of lightheadednesss. I was never able to sleep through the night, getting up 1 or 2 times a night to pee. Now, I’m waking up every 1 or 2 hours and then difficult to get back to sleep. I know one of the problems is I drink a lot of fluids to combat dehydration but also have a lot of anxiety about not getting enough sleep, not getting well or if I’m still going to get worse. Any suggestions without resorting to sleeping pills would be much appreciated. Thank you and wish everyone better days.