Your enthusiasm is quite impressive, but it is advisable to complete your higher secondary. As it would be helpful in building your skills more efficiently and in rendering a resilient pedestal. Here are some things you should keep in mind beforehand:
Majority of the students who enroll in NERIST after class 10 lack the basic knowledge in the above-mentioned subjects in comparison to the ones who have successfully completed their 12th or diploma.
NERIST expels the students who fail to maintain a minimum of 6.5 CGPA in every semester. If you can meet the expense of pursuing your intermediate (12th) and enroll in coaching, then you should go for it. Make a choice while you have the opportunities handed out to you or you might end up regretting your overdue decisions in the future.