Do you reside abroad? If yes let the boy take advantage of the research-based curriculum of foreign schools and aim for pristine colleges there, 11th + 12th coaching for JEE in India (Allen, Aakash, Bjyu, Vedantu etc) are all only good for kids who dedicate every single day to their studies and forget the outside world for 2 years. It's stressful studies and generally less concept based and more formula based + shortcuts. Also ask him any idea he has for a stream, most kids at his age don't have it figured it out which is fine but some have a fixed goal from before so you can figure it out with him. See what his interests are and then gauge the stream of engineering which would suit him best. Also, it'll take time for him to get comfortable to India if you really do reside abroad, and time can't be wasted if you're preparing for JEE or even NEET.