I had similar issues but 6 months seems a little early (to me) as total recovery is thought to be 9-12 months out. I tried the gel and gabapentine but this was at the 1 1/2 – 2 years out. I also tried Lyracia. For me nothing worked which was disappointing as many co workers got some relief. And I was taking 600 mg 3x day. It takes a period of time to get to the max dose (About 2 weeks) but then you need to taper back down to discontinue. This is important to not stop cold turkey. The biggest issue with these two meds is the drowsiness- which is how they work to calm the pain down. I would wait to take one dose when I got to work as to not be drowsy with driving.
Have you tried other options or any Techniques to desensitize that area, TENS? Massage or other manual techniques? Weight/pressure on your knee- This is one way to desensitize. Acupuncture?
I hope you can get some relief. I plan to follow to see what others suggest. It’s very frustrating to say the least.