JEE Main

After your Mains rank comes out, they will start shortlisting student out of those who have applied on the basis of their marks and ranking. If you are lucky enough you'll be able to make it into that list and if not, then I am sorry but you cant go into that college.

Yes, you can keep hope for NIT Jaipur. The statistics shows a 70% chance for you to get inside NITs.

Yes, of course, JEE ranks are just for percentage scholarships within 1 Lacs. Above that it all comes down to 12th percentage. I. e. 65% overall with atleast 60% in PCM.

You can't get NIT college with 62 marks. You can try for autonomous colleges and top private colleges.

You can get semi-government or private college only not the best college. For best engineering college, you have to come rank under 10,000 rank or 30,000 rank. So, if you want to try for good marks prepare one year and apply JEE Mains next year.

Your JEE Mains marks is some short but as you said, you are from SC category, you can get a good government or semi government college. If not, then top private college will you get and scholarship from government. Also, I'd provide you the burden of fee will reduce.

No u cant get a seat in NITW unless something big happens.the cutoff rank was way less than urs last year

For JEE Mains, Fees is Rs. 1000.

It's not easy but also not unachievable if you are running parellel to the syllabus, then you're great and you simply need to concentrate on a ton. In the event that is not the case, then, I am anxious you need to make your own arrangements since there's very little time left. Set up an examination schedule. Leave no point. Ace everything. Amend everything no less than 10 times by the exams completely. Revise!
Revision is the key, the syllabus should be on your tips.