Hello Aspirant,

Since you haven't mentioned the subject you are talking about but as you have refered for solving problems, I am assuming that your query is related to mathematics.

If you are good at maths and have already studied all the chapters of both class 11 and 12 ncert book earlier then you can finish all the questions in one month.

As you will not have to spend time in learning tje concepts and it's just about solving questions for practice.

So if you'll spend 2-3 hours regularly on this then you will be able to solve both books in one month.

If you are talking about any other subject than maths then also the answer to this query will be same as mentioned above.

Hope it helps.

Good Luck!