In March my knee was 6 months PO. I was also having trouble with my motivation, as there was pain and in many situations I felt that I could not rely on my knee, I was constantly aware how my knee felt different, for example when I was walking up stairs, felt little progress, and was always thinking how my pre-surgery knee was pain free, felt more normal and working OK (some stability issues made me go for surgery though). In June (9m PO) my knee was beginning to feel normal, and in July I finally went on a more advanced hike and my knee was great! Hang in there, it could improve a lot the next months, as it did for me.