He doesn't sound concerned. Your feeling fine is a good indicator. However, it seems you must have a high hematocrit (polycythemia) if he is even suggesting donating blood (phlebotomy).
I asked you more questions. Can you please answer them so that I may attempt to better help you? How is your blood pressure? Do you check it regularly?
Having a suboptimal EF, then "seeing if phlebotomy helps" is a highly suspect care plan. I'm assuming there is more to the story. See if what helps? You say you feel fine. What does he intend to do, have you donate blood and then see if the Echo improves? That's suspect in and of itself, but again, I think there's more to the story. If you are unable to provide further information, then I simply can not help you.
I recommend you buy a home BP cuff.
Also, if you have labs, then posting them will be helpful.
