Dear Aspirant,
It is quite difficult to predict the exact situation as it depends on the number of students attempting the exam, the seat matrix of the college and the preferences of the students.
IISERs have about 1300 seats reserved for IAT Candidates and about 10 percent of the seats are reserved for General EWS. So, we can safely assume there are 130 seats for the category you belong to.
Looking at this we can say that you have a small chance of getting into IISER Behrampur, Tirupati in the last rounds of Counselling .
It is quite difficult to get TVM, Mohali, Pune or Kolkata.
Please do keep other options open.
Hope this helps.
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