Hi student,

Whether you have qualified jee mains as well as are  eligible for jee advance or not will depend upon whether you have crossed the cutoff marks declared by NTA officially. This cutoff will be different for different categories of students. As of now, the cutoff have not been declared and reportedly will be declared after the jee mains exam in April. Also it is only after official release of rank list that you will know which NIT you can get as then only the colleges will release their cutoff. However according to previous year statistics you may be able to get some NIT. So it is better that you wait for official results.

Good luck!