For a Balanced Family life Radiology would be a better option whereas MD/DNB Medicine is high working environment, a never ending exploration to new diseases, patterns, treatments which could be a stressful situation, as ur father retirement is 3-4 yrs, Our PG duration is 3yrs which you straight away get into good hospital into job parallel to family responsibilities would be starting.
Next Steps
Predict your ranking and seat positions in any of the medical Colleges in India if you aren't obsessed over a single branch of Medicine
Health Tips
My special advice is that there's no end to any clinical branch in our Healthcare field, and in a way or other we are a bridge between new treatment modalities to proper management of a patient. To not have the stress in daily life we are a bigger Bridge in Healthcare between Pharma and Patients.