Ugh. I dealt with it for almost 7 months before. Honestly without rest nothing helped except BPC injected directly into the tendon. Even that was minimal. I ended up doing self PRP lol. Autologous blood therapy. Drew 1cc of veinous blood, and injected half of it into each side of the tendon, into the point of most pain. Caused the worst inflammation I've ever had in my life, and hurt to the touch. Then after a week or started going away gradually until it was completely gone. I prepped my growth factors with 3iu GH daily and TB-500 for a couple weeks before, so I would have abundant growth factors in circulation when I did it.
I suggest people not do this unless they know what they are doing lol. But, I would suggest getting scheduled for PRP if you can afford it. Run 3-4iu of good GH daily for at least 3 weeks before and a large injection 3 hours before the procedure. TB-500 won't hurt either. It's expensive but it absolutely works.
You might want to try BPC as a first go if it's not too bad though. Done properly, it's a miracle drug. Use a 28g slin pin and inject it directly into the most painful spot. Do 250-500mcg twice daily, especially right before bed. Try to keep your elbow straight at night and your hands as well by using a wrist brace. It does help quite a bit