Greetings aspirant!

A psychiatrist is a person who treats mental disorders through medications. That is why it is mandatory for them to have a medical degree for which one need to opt for science in 12th that is physics, chemistry and biology. There is no way one can become psychiatrist without pursuing medical degree.

However if you don't wish to pursue medicine, their is another field which is psychology, one can become clinical psychologist, however difference between the two will be that a clinical psychologist treat mental disorder with therapeutic ways and a psychiatrists treat it with medicines.

Please, make a decision after reading pros and cons, and in what field you are interested in.

Hope you find it helpful.
Thankyou!