Here is a suggestion. The docs here will tell you if it is a dumb one.
Blood pressure typically follows a daily cycle. Lowest in the early morning, highest in the afternoon. Measure yours every hour for a couple days, chart it, and see what your highest BP time of day is.
https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/expert-answers/blood-pressure/faq-20058115
Then get a juicer, make and drink beet juice daily. Beets contain nitrates, metabolized as nitric oxide, which lowers blood pressure by dilating blood vessels. The effect can be meaningful, like 8 and 4 mmHg points. See
https://www.medicalnewstoday.com/articles/288229.php Don't boil the beets, juice them raw. Or roast the beets and eat them. My guess is that eating beets is probably more effective and healthier than juicing, though the clinical studies seem to all use dosing via juice, probably for convenience.
If you can identify the time of day when your BP is highest, try timing your beet juice intake to a few hours before that. Or drink it a couple times per day. The reason is that beet juice seems to take a few hours to affect blood pressure. I don't know what the pharmacokinetic profile is, but a peak at a few hours post ingestion seems a reasonable starting guess.
https://www.webmd.com/hypertension-high-blood-pressure/news/20121212/beetroot-juice-blood-pressure
And - lose weight. Like 20+ lb. Blood pressure is higher with higher body mass. So is blood volume, maybe it has to do with higher volume of blood in the same circulatory system? Dunno.