@coastalguy26 besides everything @moonboy recommended, I would advise you to find a cardiologist who specializes in aortic diseases, not all of them do and it makes a big difference, especially as you try to navigate what kind of activities you can keep doing and to what intensity. (Look for Dr Prakash’s videos in this forum). Maintaining your BP under control is paramount, that’s why you shouldn’t exert in anyway while grunting or holding your breath, BP spikes significantly during those seconds. Remember the surgeon will see you before, and a couple of times after surgery, the cardiologist will follow you for the rest of your life.

Like you, I was in very good shape when they found mine at 54 yo, 5.2 cm, exercised all my life, actually it was found after an MTB accident. Having a healthy body will be your main asset when and if you ever need surgery. My recovery was very fast and 6 years later, I am as active as I was before

Wish you the best