Hi, 

Aiims has a different set up for counselling. Generally they fill the seat depending upon the top rankers. Those students who have a higher rank have a good chance of getting a seat in different aiims. I won't say you will not get a seat but it's bit difficult. Go for counselling and see if there is any chance.  Don't lose heart if you don't get. You have the potential to score better. Go for it. Good Luck!