how do I cover 11th portion in the next one month? Oneshot suggestions and help.

12th portion is done upto boards level. I tried last year's Comedk paper and scored about 80 in it. I want to be able to score 100-120 in the next month if I work in the right direction. Can anyone please help? suggest oneshots and what to do after oneshots to "actually complete" a chapter.?

I've never prepared for JEE or any other competitive exam before ftr. I got 19%ile in Jan attempt. didn't study for the 2nd attempt either. no hopes in jee.

I'm expecting around 80% in boards.