Since you want to learn to sing and dance, you might as well learn another musical instrument, just choose an instrument that you are interested in (this should also take into account the family's economic situation), which will help you feel happy.
Learning so much is enough. Don't dabble in everything, because people's energy is limited. If you focus on one or two majors, you will be brilliant as long as you do well.
In addition, 16 years old is still in high school. Don't give up learning completely because you have a wide range of hobbies. Even if you really don't like books, at least learn English well. Among other benefits, take the singing skills you are about to learn. No matter how well you sing Chinese, it is not as impressive as your English songs, which will make people feel that you are very cultured and meaningful.
I wish you a wonderful life! Remember to adopt!