Hello dear aspirant.

As you are in BE mechanical first year but you are interested in engineering graphics design.

So I suggest you to study about graphic design on online platform and gather knowledge and complete certifications. Once you complete your BE then go for degree or diploma in graphic design.

Another option is a tough call to leave BE and go with Degree or diploma in graphic design from any renowned college or university.

First one is a wise choice..

Hope you get it.

Good luck