Thank you so much for your advise i will keep the points in mind.

Ans: Changing field mid career is very difficult.chances of campus is slim except u demonstrate some very good projects during M.Tech.

Ans: May be IIIT.

Ans: B.Tech. from premiere institute is helpful, other wise any graduate with good basics & writing skills can crack UPSC

Ans: You have a moderate chance. See previous year cut offs

Ans: You have a very good chance of getting Civil Engineering at IIEST Shibpur.

Ans: Whether you can get an NIT depends on your category and home state.

Ans: Congratulations to your son.
He will get all branches.
JEE Mains is not for IITs.

Ans: Textile Engineering Career Opportunities:
Manufacturing Sector: Jobs in textile mills, garment factories, and fabric production units.
Research & Development: Developing new materials, smart textiles (wearable technology).
Entrepreneurship: Start your own textile business or fashion brand.

Aerospace Engineering Career Opportunities:
Aircraft & Spacecraft Manufacturing: Work with companies like Boeing, ISRO, HAL, DRDO.
Defense & Aviation Sector: Indian Air Force, NASA, private airlines.
Aerodynamics & Propulsion Systems: Designing fuel-efficient and high-speed aircraft.
Avionics & Robotics: Use of AI and ML in aerospace technology.
Research & Development: Future aircraft, space missions, and satellites.

Due to Commercial space travel (Elon Musk’s SpaceX, Jeff Bezos’s Blue Origin) this will be of high demand in future

Ans: Congratulations to your son.
CSE in Round 1 is Slightly Difficult (But possible in later rounds).
CSAB Special Rounds could increase chances significantly.
Easier to get IT, AI & Data Science in NIT Kurukshetra.