20 days left in my PUC Exams

Serious help needed

I have not prepared much yet probably not started yet for the PUC Exams mindset. There is almost 20 days left from now. I have study some topics when I had my internal exams back & scored atleast passing marks but coming now i don't know what to do now what to approach & where to start now. Anatomy i studied quite bit but also forgot it now. Well Physiology & Biochemistry I have even not touched yet as a proper reading.

So seniors or fellow mates reading this can you tell me what is the best approach for passing these subjects in Exams & is it realistically possible to pass all 3 subject exams in time left in my upcoming exams.

Can you also tell me what to do or not, where to focus max where or not anything which is advisable for me in this situation & genuine opinions.

Well kind of say procrastination is result I am standing at this situation. It sucks man.

Thanks for reading my post.