For many guys donating blood will bring down their hemocrit by 1 pt on avg. If your hemocrit is too high the doc can actually order a lab to drain you of some blood more often to bring the hemocrit into the safe zone.
Up to 49 is in range and 50-55 is high start getting over 57,58 and the risks become larger.
I'm sure you are already taking daily aspirin and fish oil which will help with maters but the only way to really lower it substantially is to give blood often.
Plz be aware that I've had friends over the years who decided they could basically draw out a pint of blood every 2 weeks from home. One of them is dead from a blood clot due to this practice. So plz don't even consider that as an option
Not that you have considered it or would but just wanted to toss that out there
plz let me know as soon as you get the numbers!