Hey,

JEE mains is going to be held on 8 April 2018. So, you have around 40 days for preparation. In these days, two P's will help you in your preparation and these are -: Practice and Perseverance.

•Your main focus should be on NCERT books to clear your basic concepts.
And,

•Practice more and more questions by doing mock tests and previous year papers. Your perseverance will help you to do this.

All the best!

Make sure that you are very clear with the concepts and have a good computation ability.

If you are through with your NCERT books then you'll be able to scire well in mains.

Having good coutrol over maths is of paramount importance so make sure you are clear with numbers.

So NCERT is the key and knowing which questions to attempt is important too.