Did you suffer any nerve damage in this injury? If so, it may be like this for a while, or perhaps for good. It sounds like you are doing things correctly. A cue that may help you while squatting is to put more weight into the injured leg. You are about 10 months out from this injury, correct? I feel like this may just take you a while and things may never be quite perfect, although they will probably continue to improve slowly as you work on it. Seeing a video of your squat would be of use. I wish I had something more helpful to say than, "Good work so far. Things may continue to be a little lopsided even with diligent effort." The level of function that you have already attained vastly exceeds the average patient after a similar injury, which is one reason why your doctors probably don't have many helpful things to say.
We'll see if some others have input or experiences.