JEE

Go through NCERT.
Solve more and more questions.
Try to solve previous year questions and question banks also.
IIT is undoubtedly the best college for engineering in India.

Posting a link for college prediction:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Try for other colleges if you don't get an NIT.

If you think you are able to qualify JEE then drop one year but if you don't want to prepare for JEE then give entrance exams of private universities.

It's hard to get admission in any good college even there is a little chance of getting admission in private college, try and search around you, maybe you will get, but I don't advice you to join those colleges instead of this you should drop or prepare for other state exams.

1. Rank Predictor: https://www.shiksha.com/b-tech/resources/jee-main-rank-predictor
2. College predictor: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Join IIT coaching and study at home, the school syllabus of class 11th and coaching will take care of IIT JEE syllabus, but you also have to take care that you will have to do some self-study. It does not completely depend on coaching.

No, it is not possible to get any government college for B.Tech.
You should go for colleges like Gulzar Group of Institutes.
Only for Computer Science and Automation/Robotics.
But, not for civil and EEE.
For civil, you can choose COER and for ECE Chandigarh University.

It won't be a good decision to take one more drop for JEE. Its better to join a decent engineering college through your JEE Mains score. Because drop will affect you in your career in later stages if you are not able to clear JEE next time. So, in my view, you must join a engineering college this ye

If you are qualified, you can apply for NIT counselling through www.josaa.nic.in.
The same counselling is valid for all NITs, IIITs and also GFTIs.
To get the colleges other than NIT, IIIT, and GFTI, select the colleges where JEE Mains scores are accepted and just fill up your JEE roll no. and marks i

Since there is negative marking, your wrong answers will be evaluated. If you have not circled the correct answer, you will be awarded -1 and for correct answer +4.
Only if you have not attended, it will not be given any marks and so it is not evaluated.