Everyone's got that one thing that they love unconditionally, that hobby or activity that helps them relax and chill out when they need it. Whether it be music, writing, baking, or literally anything else, there eventually comes a time when it begins to feel like you're being forced to do it, rather than choosing to.
It's a situation that's incredibly frustrating to have to deal with, and it ends up leaving one question sticking around: What can I do about it?
Your first instinct would probably be to take a break from said hobby. A long break. Of course, you're not technically wrong, but it can be hard to persuade yourself to take time off.
When the thing you do in your free time becomes the thing you don't want to do, try to replace it with something else. Not completely, just for a period of time while you try new things. You may end up finding something else you like doing.
The next thing to do is to try finding ways to make it more fun. If you play an instrument, find some fun pieces you might like to learn. If you bake, look for some new recipes to whip up. There are ways to make anything fun. You've just gotta be willing to do new things.
Lastly, work on your time management.
If you have so much free time that you're becoming tired of your hobbies, maybe you should find a way to make yourself busy enough to not have free time. Look for a job, or set aside more time to do homework and study. Come up with a rewards system that allows you to do your hobby after you've spent a certain amount of time studying.
Music has been my entire life for about nine years now. I've enjoyed every moment, but I've also grown insanely tired of it.
While I can't imagine being so tired that I'd never want to pick up an instrument again, I do try to find other things to do. Doing one thing constantly has been rough for me, so I've made time to write, and I feel so much better about it. I'm not putting all of my time into one hobby, and I'm a better musician because of it.
You'll figure it out. If something is really and truly important to you, you'll find a way to keep doing it.