I went through months of PT which started at home maybe 10 days post surgery. This is my second replacement and recovery is much worse. My ortho told me it can take up to a year and I had my surgery Aug 16, 2021. I found that my knee always hurt after PT. It should not hurt during PT because even if it feels fine, I always experienced pain afterwards. I was told an indoor bike, preferably recumbent was ideal but I don't have one and no getting one. Range of motion, whether you have pain of not seems to be the most critical. If you have followed up and gotten no satisfaction, you might want to get another opinion. I worked a lot in bed or on thew sofa flattening ny knee and pulling it up. My other knee did NOT take this long so I am just going with the year estimate. You can only push your body so much. Best of luck.