I need to speak to a catholic regarding Confirmation (The Third Sacrament).

Hello, I am 23 year old, Medical Intern from Mumbai and I am not confirmed yet. My church had closed down and the next year we had shifted to a new place. I didn't get confirmation because it was a new place and I didn't feel comfortable.

I then went to a medical college where i'm an Intern today. My dad is after me to get confirmation, I still don't feel interested and feel i'm past that age.

How important is confirmation? Is it necessary if I plan to get married in a catholic church?