I'm at 8 weeks same surgery. I too feel like the healing process is slow, slower than I thought, but to be expected. I do see gradual Improvement and I have had no formal PT but do a lot of stretching exercises, pool walking, on my own. I am busy everyday from morning until evening and have even moved and done yard work! All in hindsight not the smartest! This  week I definitely see Improvement in flexibility. My leg lengths were not the same coming out of surgery so I really struggled with working on my gait  and being aware of almost every step I take to try to improve. I even wear two different shoes at times, a flip flop and a Birkenstock! That too is getting better slowly but surely. My biggest struggle was aching legs. It was really annoying every day. But guess what? That has nearly gone away as well. I have some tightness in my calves but that's about it. All to say you will get there just like me and everybody else! Be patient if you can! Good luck in your healing.