I have had alot of help with dry needling from physical therapy, and some hand manipulation. If you have a tenz unit that alo can be beneficial. There are also some stretches you can do, like putting your hands on your face,palms on cheeks and lift up and slowly open the jaw as many times that you can tolerate.. I hope you find some sort of relief

Sinus massages help too. I do them for migraines as well

Try gua sha. If I'm having a hard time I just massage me face to help drain my sinus tracts.