Managing hydrocortisone dosing with cardio exercise

Hello! I am looking for information on managing my hydrocortisone supplementation doses following cardio exercise. I basically "run out of energy" by afternoon when I do my morning workout of moderate intensity. Since I also have a medium aneurysm (42-43cm ascending) and manage endothelial dysfunction, my cardio is important. Sometimes the angina increases with this overwhelming fatigue, and I have to completely lay down. There seems to be very little guiding information available, including from my physician team, who are very good. Most of this is left up to me, so I am asking for resources. Thank you for any assistance!