Hello,

In India total 33 diploma in nursing colleges are present. Here I'll suggest you some name.

1. Christian medical college

2. NIMS University

3. Sri Ram Chandra Bhanja medical college and hospital

4. Government Chengalpattu medical college

5. SRM institute of technology

https://medicine.careers360.com/colleges/list-of-diploma-in-critical-care-nursing-colleges-in-india

Above link also help you out to find colleges.

All the best.