I'm very confused about choosing language level....

I'm currently giving my 12th boards exam in India and don't know what to choose now. Around March end these exams would end. I don't which one to focus on B1 or B2. I'm at A2 already but B2 takes a lot of time to reach which I really don't have. I'm aiming for this winter intake(2026) but I'm not sure if I would make it cuz I'm planning to give my goethe exam on June starting which ends up getting my conditional letter around August start-mid.

Just help me choosing B1 or B2....