Hi Dear, According to the jee-main cutoff criteria cutoff is -35 marks for pwd students.if you secured 424 ranks in jee-mains then you need to focus on next exam called jee-advance.
for NITs check the cutoff criteria:
https://engineering.careers360.com/articles/jee-main-cutoff
good luck
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile