I am a humanities student and I want English Economics and Psychology in graduation but I didn't had psychology as a subject in class 12.
Now first, I'd like to tell you about my own story, because I've been in a similar situation.
I never studied programming in school, being a student from ICSE/ISC board, I had chosen PE since 9th grade. So, no clue about coding.
Then, I joined Mining engineering at NIT Raipur. Not going to elaborate here.
But after my first year, I started learning to code, and I fell on love with it.
In the last two years, I've been balancing my academics(maintaining a CPI 8) along with coding.
So, if I can balance two disciplines( I'm not bragging here), you can surely study psychology directly in your graduation with a little extra effort.
Now, to answer your question specifically, you'll need to find someone who's been there in the exact same situation.
I hope I helped atleast a little.
Thanks!