He can opt for any of the following:

• Dentist
• Dermatologist
• Dietician
• Nutritionist
• ENT Specialist
• Food Technologist
• Pharmacy
• Medicine – Allopathy, Ayurveda, Homeopathy, Veterinary
• Radiology Technician
• Pathology
• Botany
• Biologist
• BioTechnology
• BioMedical Engineering
• Microbiology / Horticulture
• Forestry
• Para-Medical – Nursing, Physiotherapy, Lab Technician
• Agriculture / Fishery
• Life Sciences (Genetics)

However, you will have to be sure about which exact option is suitable for you, since all the fields above are different and distinct.

If your son is interested in doing MBBS you should go for it as it has good scope

in the future more then other medical entrance exams and it is good to choose the field according to the interest and passion of the students.

You can check below medical courses other then MBBS 

1- BDS

2- BHMS

3- BAMS

4- B.Pharm

5- B.Sc Nursing

6- B.P.T (Physiotherapy)

7- B.O.T (Occupational Therapy)

8- B.U.M.S (Unani Medicine)

9- D.Pharm (Ayurvedic, Siddha Medicine)

Good Luck!!