I was 61 when I sucked my first cock. It was so much better than I ever thought it could be. I swallowed too. My suggestion is, just go for it, you’ve waited long enough, don’t wait any longer.
Yes on the DL it’s not easy, but I started about that same age, first I didn’t want to swallow, but that didn’t last long, I love it and can’t get enough.. once or twice a week I suck cock, a couple of semi regular. I’m ravenous and most guys wives are not.