Every student has a different study method. So, you need to have a unique timetable that plays to your strengths and one person's study schedule may not work for everyone.  Since you still have some syllabus left, I suggest the following:

• New chapters :  Try completing high weightage, easy and new chapters first. Do previous year JEE Advance question papers, so that the chapter will be firmly fixed. These chapters should be easier to revise later.
  
• Weak subjects : If you are strong in one subject, give more time to learn and practice questions from other weaker subjects so that your overall score is improved
  
• Morning :  Learn theory and do difficult questions in the morning. That is when we are the most fresh and we can retain more information
  
• Take breaks in between study sessions
  
• Study 2-3 subjects in one day
  
• Get the right books for your preparation
  
• Afternoon : Revise all theory parts of chapters you already know
  
• Evening : Give mock tests in the evening. Don't worry if you can't answer some questions.
  
• Then give practice tests on chapters that you already know, so that you can see if you have forgotten anything
  
• Repeat this timetable until the day before the exam. You should NEVER try to cram new information on the day before an exam
  
• Keep giving mock tests and do practice papers
  
• Health : Get atleast 8 hours of sleep a day. Start studying in early mornings and do not study all night, as this will become a habit and they just make you exhausted on the day of the exam
  
• Eat healthy, fresh food and eat lots of fruits and veggies. If you get ill, then that much time is being wasted, so do take care of your health.
  

Finally keep calm and don't be stressed. If you can clear Mains, then you can also clear Advanced. Just put in your best efforts and see the results.

According to your score, your rank can go up to 1 lakh. You get admission in top NIT, it will be very difficult. But you will get admission in NIT.

Hii

You can score good in jee advance. Join any crash course on your nearest institution. It will provide best result to you. Or you can connect with online resources. Online resources now a days is a good option. Or watch videos in youtube. But practice many questions as possible. Give your best. Work hard & be relax. 

Hope this information is helpful for you.