Engineering Entrance Exam

It will need hard work to get a rank below 100 in paper 2. You need to do a minimum of 10 hours of study in a day.

If you want Army Institute of Technology you need to score 80 marks in JEE Mains.

It's your choice if you balance between your school study and JEE preparation then you can start preparing for it in class 10th.

There are centres of renowned coaching institutes like Aakash in Haryana itself in Gurgaon and Narnaul. There will be a centre soon opening in Rewari too. I guess there is one in Rohtak too. Class 9th is too early to prepare. For now, just focus on your school and make your concepts and basics strong. You can go for coaching in class 11th and 12th.

Resonance is the best coaching institute for IIT followed by Allen and Bansal classes.

For GNRL, it is 26.9 and for OBC and SC/ST is 24.2 and 17.9.

Here is the link:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/mhcet-cut-off-predictor&ved=2ahUKEwiI59nJvobaAhVLpI8KHUeWBnQQFjAVegQIBxAB&usg=AOvVaw3_igmRyVhCLPYQ1-xCi9Q
But one more thing about the cut-off, it can fluctuate by a few marks more or less.

According to my knowledge, if anyone failed to book their slot, VITEEE automatically booked your slot and you will get notified regarding this before 1 week of the exam at least.
All the best.