Dear A,
I'm very glad to hear from you.As you mentioned in your letter,you don't have enough time to do things you like to do and you are really anxious about it.Well.don't worry about it too much,here is some advice for you.
First of all,you should use time efficiently when doing homework.If you can finish your homework in a short time,you can use the rest of the time to do other things.Certainly,you have to do it carefully to make sure that you don't make stupid mistakes.
Then,you may seize the opportunity to enjoy yourself instead of just staying at home and watching TV at weekends.Teenagers should be allowed to go out at weekends.Every weekend you have plenty of time to do your favorite things,
Finally,if you still don't have extra time to enjoy your hobbies,I suggest you to keep your mind on study because you are a grade-nine student now,you have to work hard and it's the most impotant things.You can develop your hobbies after graduaction,that's not late at all.
Hope my advice can help you.
Yours,Toro