Currently 1st Year Diploma Student in Mechanical, My aim is to become CFA?

I am a 18 y/o, passed 12th from commerce stream. My father wanted me to do engineering. But, I have interest in Finance, Trading , Economics. I am thinking of Pursueing CFA in future. But, don’t know what to do in these 3 years of college.
I am thinking of –

1. Learning web development or Data Science from udemy, to earn money by freelancing.

2. Complete B.Com private with my Diploma engineering.

I Don’t know what to do for building my career.

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