I am in12th and I study for jee mains.l have just 1 month for this exam. I have no tuition or coaching. So how can I prepare for jee main.

Please refer the following five points to keep up and have a strong preparation for your JEE exams:

1. Time Administration

Without time administration, no enchantment pill will enable you to achieve your objectives. It's significant to set aside a few minutes your companion as opposed to making it your enemy. Keep in mind forget – you have to work shrewd notwithstanding buckling down. Sitting with a book 16 hours every day and really considering for 16 hours daily has a colossal effect. Guarantee you invest quality effort considering when you are engaged and abstain from slumping or contemplating when feeling languid.

2. Study Ideas, Take care of Issues, Cross-Check Arrangements

Regardless of what number of training classes you join or what number of study materials/books you get, you need to invest energy contemplating these materials and address notes. Self-think about is a standout amongst the most imperative parts of your JEE readiness. The additional time you give towards clearing your ideas in 3 subjects (Material science, Science, and Arithmetic) – the better are your odds of getting a best rank in the JEE.

3. Fathom Earlier Years' Papers

Keep in mind forget, there is nothing called another inquiry. The JEE inspectors test understudies quite a long time on similar ideas keeping in mind the end goal to build up the validity of the understudy. The inquiries are simply reworded/changed or made to look more confounded. More than that, unraveling earlier years' JEE question papers enable you to comprehend the general approach and example followed in JEE exams. Aside from this, you turn out to be more sure by unraveling questions that had showed up in past JEE exams. In this way, you will have the capacity to handle comparable issues in your JEE exam pretty effortlessly.

4. Take after a Timetable

Make it a propensity for burning through 15 – 30 minutes on arranging your day toward the beginning of the day. It will set the timetable in your mind about the to-do errands and maintaining a strategic distance from wastage of time. You can perceive how time administration and arranging your day are so related. You need to stamp your needs first and scribble down the work you can't skip—lunch, classes and workshops. You will be generally occupied with amid the day with school, classes, so distribute time for self-ponder at night. Enjoy a short reprieve after each subject and survey your answers.

5. Comprehend the Syllabus and Exam Example (counting weightage)

The IIT JEE syllabus is huge. With a specific end goal to get a decent rank, you should ensure that you have break even with summon in all the three subjects. You should examine all the critical themes first and after that take care of test issues. Certain subjects in the JEE syllabus have more weightage over others, so laying more weight on these essential points will enable you to score more stamps in the exam. The extreme subjects clearly have more weightage, so with no concession, you should consider them appropriately.

practise solving previous years JEE Main papers

No problem.JEE mains is an exam which concentrates on the candidate's understanding of basics. So, as you are alraedy aware of NCERT textbooks and their content, it is easy for you to crack it. Try previous papers and mock tests online.