Hello Ajay,

National Eligibility Cum Entrance Test (NEET) is the largest entrance exam for admission to medical, dental and AYUSH courses in the country. You need to formulate a well planned preparation strategy to crack this national level exam.
NEET 2019 exam will be conducted by National Testing Agency (NTA) in Offline mode and the exam will be conducted on May 5, 2019.
To start your preparation for the exam, firstly you should know about the detailed syllabus and the pattern of exam.
The exam lasts 3 hours and consists of 180 questions. The exam consists of 3 sections : Physics, Chemistry and Biology. 45 questions are form the Physics section, 45 of Chemsitry and 90 questions of Biology.

To should refer to NCERT textbooks of Class 11th and 12th. NCERT books are the best for clearing the basic concepts. You can also refer to other important books for indepth knowledge.
Make a time table and follow it religiously and divide time for each section.
Stay away from distractions like social media, games and other distractions and focus on your preparation to get seat in any top medical college.
Don't stress yourself. Work hard and keep faith on your hard work. Practice as much questions as you can. Solve previous year question papers and mock tests.
You can also refer tothe link below-

https://medicine.careers360.com/articles/neet-2019

All the Best!