Hello Hana Khan,

I would like to tell you that 12th standard course(PCMB) has a higher weight in the comparison of 11th course. So I would like to suggest that you need to focus more on 12th chapters. But you know somewhat 11th's chapters are related to 12th's without completing that specific chapter you cannot proceed due to lack of basic knowledge.

So, go through all chapters and master them thoroughly.