Pilot Training

This is one of the classic ideas as Aviation is booming in India. Yet, I suggest you if possible do your pilot course abroad. There are 3 ways to become pilot after 12th in India.
1. Join in a DGCA approved flying school and complete your Private Pilot License (PPL) / Commercial Pilot License (CPL) and join as a pilot in an airline.
2. Complete your Bachelors in aeronautical engineering and then go through the above mentioned way.
3. Apply for exams like National Defence Academy (NDA) and become a government trained pilot with free of cost training. As of me, I suggest you to go through the 2nd way because once your aeronautical engineering is completed you are having a backup in life also you will be covering all the basics of aviation which is easy for you during pilot training and Interview. You may also find some other ways but these are efficient. All the Best for your future endeavours.

Bachelor's Degree in Aircraft Maintenance Engineering
The Bachelor of Science in Aircraft Maintenance Engineering can be completed in four years of full-time study. Students enrolled in the B. S. programme will gain a more thorough understanding of aviation mechanics and systems. In addition to offering courses that emphasize maintenance troubleshooting, many universities and colleges allow students to choose a concentration area. Some possible areas of concentration include powerplant and airframe maintenance. Powerplant maintenance engineers work on engines but may also work with propellers in a limited capacity. An airframe maintenance engineer will work on all aircraft systems except the engine, the propellers and the instruments. The core curriculum of the Bachelor's degree programme focuses on the various aircraft mechanical systems and structures. Select courses emphasize troubleshooting methods and problem solving. The Science of aviation
Fundamentals of aviation
Practices in aviation
Turbine engines
Engine systems of aircraft
Electrical systems of engines
Fore more details, you can visit the following website:
https://study.com/aircraft_engineering_degree.html.

Please check for your eligibility to pursue a CPL course from the criteria mentioned below:
Commercial Pilot License (CPL);
A student can get the CPL by doing his flying training and complete 250 hours of flying.
Eligibility: Class XII (Physics and Maths). Current PPL License needed with flying experience in the last three years, 18 to 30 years and medical clearance from AFCME, New Delhi or IAM, Bangalore.
Written exam: A test in the following subjects is needed for getting the CPL: Air Regulations, Aviation Meteorology, Air Navigation, Technical, Planning. These exams are conducted 6 times a year. Actual flying experience required is 250 hours of total flying time (150 hours of solo, 25 hours of cross country, 10 hours of instrument flying, 5 hours of night flying).
After a CPL, you can build up on more flying hours, login 750 hours of flight time, clear the requisite papers and acquire a Senior Commercial Pilot's License. Regards.