As you prepare for JEE, exploring a side hustle can be a great way to excel your skills and interests. One option could be tutoring or teaching, enhancing  your expertise in subjects relevant to JEE or even school topics. This not only reinforces your own understanding but also helps others which can be highly rewarding. Another option can be content creation, such as starting a blog or YouTube channel focused on education or exam preparation tips. This not only allows you to share your knowledge but also potentially generates income through ads or sponsorships.

You can also start preparing for government exams by studying current affairs, economy, polity, etc. This also helps  you in increasing your knowledge.

Whatever you choose, balancing your side hustle with your JEE preparation is key to ensuring both academic success and personal growth. Hope this resolves your query.