Costing imp topics for tommorow 🥀

Registered for both CA Inter Group 1 & Group 2 (may 26) I've barely studied G2 at all. Still planning to sit for the exams instead of skipping.

Can you all suggest the most important high weightage topics for Costing that I can realistically cover now to at least make it a decent attempt?

I am somewhat familiar with the concepts. Looking for practical advice on what gives the best return in limited time.