Hi, There are rare chances to pursue psychology through engineering.
even if you go for this duo it can be a total mess.
I would suggest you to complete your Btech first and then you can pursue some degree or certification course in Psychology.
Both are different domains of education. Know your deep interest in one and move ahead in it.
All the best.

Dear

Kindly specify your qualifications and career goal accordingly I would guide for the psychology option.

All the Best