I'm close to 5 months, had both hips done at the same time. I struggled to put on my socks pre surgery and couldn't sit with my ankle up on the opposite knee.
I was extremely tight in the adducotors and tight in the hip flexors. Lying on my back I couldn't quite pull my knee up straight to 90 degrees. I can now go to about 110 deg (or 70 if you're measuring from the torso).
Lying on the back with the soles of the feet together I could open my knees 18" apart. I'm now up to 25".
In addition to going to the gym and riding my bike, I've been doing a yoga stretching class which helps a lot. I'd highly recommend it. I can't do all of the positions fully, especially anything related to sitting cross legged, but the instructor says that doesn't matter. She's very good at working with people with limitations.
One other stretch that I've found helpful is the paleo squat. I couldn't do it at first without the help of a block but now I can do it no problem. It looks like this.
https://s-media-cache-ak0.pinimg.com/736x/80/05/b4/8005b4317ef4e1fccf00d4ea03c69356.jpgI'll also say that I had pain in my right adductor and hamstring until about 4 months. My surgeon said that is normal and the last couple of weeks it's pretty much gone. My hips are still weaker than before but I'm hoping that they'll be in good shape by the end of summer.