Bachelor of Computer Application (BCA) is the only IT course under the affiliation of Tribhuvan University, Faculty of Humanities and Social Sciences which does not have any barrier for students from any faculty background to enrol until you meet the eligibility criteria. High School graduates of any faculty can join the program. So this might be the right IT course for your preferences.
Before you decide on going with BCA or not, do consider going through the full course of the program.
MIS and E-Business
Introduction to Management
Computer Graphics and Animation
Advanced Java Programming
Cyber Law and Professional Ethics