As the recent recipient of a second hip implant, I can definitely attest to the difference in recovery process. With my first, I ditched the walker after like 4-5 days and was walking with no devices after two weeks. It wasn't a fast walk, but it was stable, mostly pain-free walk. I was just a couple months past 50, so older than you, but still on the young side for THR.
I'm on day 8 now of my second hip (yayyy arthritis!) and I've just moved to the cane from the walker. With this surgery I developed some pretty bad pain in the mid- to lower outer quad area whenever I pushed off with weight. It still hurts but is a more manageable pain than the quite teeth-gritting pain it was for the first week. My sleep has also not been as good with this surgery. I know overall I'm doing well, but I am the victim of my own raised expectations.
I also developed weird pains months after the initial surgery. From my knee to my quad, it would just move around. It all went away after about 4-5 months, but you never quite knew what you were waking up to each day it seemed. You are being very active and good for you. I was too, but your body knows what it can take and what it can't. You had AVN, which is pretty traumatic so it's natural for your body to take a bit longer to recover. Good luck!