My dd had the same issue...her ortho made her stop all practicing for 3-5 weeks because of overuse. She had an MRI which revealed damage to knee cartilage and rest is only thing to heal it. She was able to still go to practice to work upper body and flexibility.
Well, after two years of doing her bwo on beam, she decided two weeks ago she just can't do it....the gym has a judge coming next Friday for our team mock meet and first real meet is a month away! Fearful now about how her seasons will go (she does new L5 oct-dec and new L6 jan-mar). Praying...