You can let your mother listen to guzheng music and let her feel the charm of guzheng. You can also learn some guzheng yourself and introduce it to your mother. Guzheng is an elegant musical instrument, which can cultivate people's sentiment. I am also a junior, but I am still learning guzheng, but my academic performance has not decreased. At the same time, junior high school is under great pressure, which is a good way to relieve stress. As long as you use your time reasonably, you can still study hard. I hope you can get what you want!