Based on the last year cut offs here are some colleges name in Andra Pradesh and Karnataka

Andhra Medical College, Visakhapatnam - Last year cut off rank - 306588

Nimra Institute of Medical Sciences, Vijayawada - Last year cut off rank - 96601

Fathima Institute of Medical Sciences, Kadapa (Muslim Minority) - Last year cut off rank - 97742

Dr. B.R. Ambedkar Medical College, Bangalore - Last year cut off rank - 102188

Kempegowda Institute of Medical Sciences, Bangalore - Last year cut off - 94124

There are many more colleges in karnataka where your son stand a chance based on last year cut off. You can check it which college he is getting by clicking on the link below https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp