bermand said.. Try blood injections, reuse your own cells into area. 70% success rate for cure, about $400, done under ultrasound by large radiology practice's. You will require GP referral. About 1/52 of limited activity, improvement usually occurs after 2-3 weeks and goes on for 6months. As recommended by top upper limb orthopaedic surgeon. Dyor first though.

would not have any cortisone or other more expensive or more invasive treatment. Stretches and ice all good as well. Can take multi therapy to sort out. Get lighter bar pressure and reduce kite session time.
This is without doubt the best solution if you want a quick fix. It had no side effects other than being extremely painful when injected. I've had this three times and cleared the issue within two weeks. Rest, ice and stretch. Massage into the area but not directly on the tendonitis.
If you want to do it more slowly, follow rest and stretching guidelines.
It's all about encouraging blood flow into an area devoid of much blood to increase healing.
The hard part is finding the will to address the causes that lead to tendonitis. It took me a while but prevention has worked for five years.
All the best.