1. I think at your level, you may have passed the exam. Because the requirements for music theory in the exam are not too high, it mainly depends on your playing level, and there are also some requirements for your external image, which will improve your impression score.
The competition in winter camp is still fierce, but as long as you have the strength, you can still stand out. The video playback part needs to be studied, which is better. You should practice more and believe in yourself.
3. You don't just take it as long as you can play. The school is for talents, and the exam is very strict.
4. Your culture class must be very good, so I suggest you focus on 2 1 1 university, and you will be admitted to an ideal university in combination with your cultural achievements. Those students who are not very good at cultural courses will use their special skills to take two universities, and their performance requirements will be lowered.
Finally, don't delay your study. The specialty is only to assist learning, and you can't lose big because of small things. Wish you success!