I might recommend custom molded "musician" earplugs. Something like $60-100. Price is not the factor, its the person making the mold. These will/should have these tiny, tiny removable pieces... so that you can adjust how much db protection you want. Swappable. They offer flatter EQ, but not totally flat, though way better than the typical kind. I never bought them, though Ive always wanted a pair, but for the affordable ones I see in store, I prefer the orange Leights. IIRC.
I have no idea if it makes any difference, but when I have a bit of ringing in either ear, my natural instinct is to plug my ear pretty firmly till it goes away. Im sure it does absolutely nothing, but I always do this for some reason.
Drive with the windows up. Plug your ears when nearby jackhammers and ambulances. Won't hurt in slowing down the whole aging process I guess.