• Follow the NCERT Books
• Write the enough number of mock test series
• Do the enough practice on those domains from which the JEE asked most number of questions
• Make your stratigies and plan accordingly.
• Do the previous 10 years JEE papers which will help you to get the real scenario of asking the exam .

Hey Raghav,

As per query I must tell you that it is very very difficult to clear JEE Main in just 5 months preparation but it is not impossible so I would advise you to go through the NCERT books of class 11th and 12th thoroughly first then you can go for online test series or previous year papers that would be helpful and a point to remember is that 'Practice is the most important key for JEE Main'.

All the best for the future.