Hi, since your rank is good and enough for taking admission in branches except CSE in MMM Gorakhpur but first of all let me tell you that everything is ok, but MMM Gorakhpur have only 10% reserved for the admission criteria from JEE mains rest admissions are taken from there own exam pattern. So it is necessary for you to enroll yourself into the institutions before all seats gets full from the JEE mains reserved quota of MMM, Gorakhpur.

Good Luck.