'Too much activity' is relative to your personal history, genetics, and recovery strategy. You've listed a lot of exercise that you do, but nothing about your diet or rest protocols. In terms of injury recovery I'd recommend chatting with a physiotherapist who has experience with dancers.
Two hours of calisthenics IS overkill, and arguably not useful for your goals. I'd say that it's a great idea to add some resistance training, but typically much more than an hour starts to be counterproductive, in terms of how your body is responding hormonally. But sprinting on it's own will not help build muscle to the extent that you want in order to prevent injury. If you need a good place to start, I'd consider adding this to your mornings 3-4 days a week: https://www.nerdfitness.com/blog/beginner-body-weight-workout-burn-fat-build-muscle/
Other things to take note of:
- are you consuming enough protein? ~1g/lb of bodyweight is a good guideline for building muscle
- are you sleeping enough/well? ~7-8+hrs/night of quality sleep is essential, you mentioned getting more but is it enough?
- are you managing your stress? meditation, gratitude journaling, colour books, etc. are all useful to help lower stress
- are you consuming sufficient calories? if you are not eating enough to fuel your body you will not get stronger and you'll be more prone to injury, especially if you're working out a lot
- make sure to take a full day off at least once a week; no power walking, sprinting, or workouts
You're still quite young, and you need your body to work well for decades yet; be safe and go slow, injury recovery is no fun. Don't forget to have fun!