I think for what you're dealing with, ART may not be that important. It sounds like you've got more of a physical therapy issue. Even though patellar tracking issues are common, there isn't a consensus on effective treatments. I think Steven should chime in.
Also, if you've been getting soft tissue work done for this long, you shouldn't still be feeling weak after the work. I'd prioritize the physical therapy over any soft tissue work.
But then again, you could have dislocated your patella. While sitting in a chair, put a hand over your patella and feel if it is tracking correctly as you flex and extend your knee. Also, with a loose/relaxed and straight leg, try to move your patella to the left and right, and feel whether it is looser to either side.