Yes so you're aiming for a GOVERNMENT college in Tamil Nadu under 15% ALL INDIA QUOTA seats. So your cutoff will be a little high. As per the last year stats, Madras Medical College Chennai has cutoff marks of 599 equivalent to an AIQ rank of 1598 for general category under 15% AIQ seats reservation. Stanley Medical College had cutoff 576 marks equivalent to a rank of 3520. 568 marks equivalent to an AIQ rank of 4523 in Coimbatore Medical College. Almost all the colleges had cutoff in the range of 550 and above only. So kindly try to score above 580/590 to be in the safer side and ensure your seat in your desired college.

Kindly refer to the site below for detailed information.. All colleges cutoffs are attached in this link below...

https://medicine.careers360.com/articles/neet-cutoff-tamil-nadu

Best wishes. Thank you.