I was having a course of acupuncture for another problem, I happened to mention that I had PF.
She immediately said “oh that’s easy” so the following week I went back and she sorted it in one session.
I recently attended a talk from a renowned Chinese acupuncturist he happened to mention PF and how it was very receptive to acupuncture.
Find a good approved acupuncturist.
If you happen to live near York the acupuncture training college has very good value sessions with trainees but supervised by qualified acupuncturists.