If you are talking about the jee .

Than you can not complete the syllabus in one month.

All you can do is only to score good score by reading and learning some most important topics. Which cover major part

Like physical and inorganic chemistry.

Maths algebra.

Physics Thermo and fluid.

If you are talking about board you can cover it in one month.

But you have to be dedicated and have to give 5-6 hours daily .

Make notes

Good luck

Hii

I think you are asking about the preparations of board exams
First of al you need to understand that jus reading things merely for the sake for reading does not work. You need to make a proper schedule keeping in mind all your day to day activities. You can wake up early and start to study for 3-4 hours then take a break for lunch.
Since in the morning our mind is fresh and active you can start with the topics of physics, understanding concepts and theories.
Then in the day time again study for 3-4 hours, take up mathematics, understand the formulas the steps and practice the questions. then take a break for snacks and evening walk or some other activity.
Then in the evening start to study chemistry, keep practicing and study throughly
Take help from references and also from teachers or you can comeup to us for any of the doubts, do not pile up doubts for end.
Also remember to keep solving the sample papers so that you can analyse your performance and understand where you need to focus more.

Hope this helps.
Good Luck!

Are you preparing for JEE Main Entrance Exam ?

In order to score good marks in short duration you should focus on the important topics which carries more weightage in the exam.

Make sure your basics are clear. Make sure you read NCERT books throughly. So, that you can solve tricky questions easily.

Solve as many as MCQs for your practice.

You should make your proper time-table. You can set your targets on daily basis and for weekly as well.So, that you can complete your syllabus on time and you get proper time for revision.

For exam pattern and to know level of questions you can refer previous year papers.

Solve complete mock test series to work on your time management and to increase your speed. With the help of mock test series you can analyze your preparation level and you will get to know your strength and weakness. So, you can work upon them.

Revision plays very important role in scoring good marks. You should revise your syllabus properly. You can make your important notes as well which will help you in revision.

Good Luck!