Hi kamalesh,

Getting 95+ percentile in jee mains is an accomplishable task if you are hard working and dedicated towards your goal. All you need to do is to just study with your full concentration and do not waste any time. Since jee mains 2 in April is approaching fast you must start your revision as soon as possible. Clear all your concepts, refresh whatever you studied and try not to study anything new else it will not be fruitful.

You need to devote atleast 7 hours each day. Its hard, but not impossible. JEE mains exam pattern has always followed the NCERT consistently over several years. So it is important to read the NCERT's of Mathematics, Chemistry and Physics thoroughly.
CHEMISTRY:NCERT has all the basic concepts and is good for light revision. You must join some test series so as to increase your speed and accuracy. Also pay attention to the basic concepts and solve as many different types of questions as possible. After this you must attempt questions from past 10-12 years of jee mains. Several books are available in market like Arihant, McGraw Hill,etc that provide solved previous year papers.
MATHEMATICS: Practice is the key to maths. Once you have covered the syllabus, practice questions from books like R D Sharma or TMH Mathematics. Also refer SL loney and Hall& Knight. Honestly attempt the previous 10-12 year papers to enhance your understanding of concepts. The formulae must be on your fingertips and attempt the test series thoroughly.
PHYSICS: Physics is a very conceptual subject. Don't try to mug up things without understanding, as this will be time consuming and not fruitful. Its better to read less but whatever you read is conceptually clear to you. Some of the important books apart from NCERT areaH C Verma and Arihant DC Pandey. H C Verma is a must solve book for jee mains. Solve the past years papers for the final touches to your preparation along with the test series.

One of the most important thing in preparation is joining a full test series of any good coaching institute. Do not underestimate its importance as it will give you an experience in solving jee mains paper which will be really helpful when you sit for the real exam. It will also increase your problem solving speed which is on of the major rank deciding factors.
Don't panic, relax, work hard, be patient and you will easily clear mains with flying colours.