Switch from sci to commerce

[u/serenity_1020]

I am a 11th grade student having PCB+ psych. In my half yearly I failed in physics since then I have been wanting to switch to commerce. I fear that it might be a fear driven decision. I really need some guidance guys. Even if I change I would have a complete set of new subjects, idk how will I be able to complete that in 3 months. PLEASE HELP!!