Hi!

As per current JEE Mains eligibility rules, a student can appear in the exam in the year of passing Class 12 and the next two years. If you passed Plus Two in 2021, your direct eligibility window for JEE Mains has already passed. Even if you reattempt Class 12 in 2026, it is generally considered as an improvement attempt, and NTA counts your first attempt year for eligibility purposes. However, rules can change in future, so keep checking the official JEE Mains brochure for 2026–2027. Since you’re already pursuing B.Sc., you can also consider other state-level engineering entrance exams or lateral entry schemes for B.Tech after graduation. These options will help you continue toward your goal without depending only on JEE. It’s good you’re planning ahead, so keep exploring all possible pathways.

Best wishes for your studies!