I am an alumnus of KIIT. In my B.Tech Civil Engineering course, I scored a 9.43 CGPA and ranked 2nd overall in my branch.
For a 9+ CGPA, I would recommend you follow this advice-
Apart from studies, do enjoy your life at KIIT, make amazing friends, and develop leadership and managerial skills by participating in societies like the Photography Society, Music Society, Dance Society, etc.