After graduating high school, I enrolled at university to study subject A. But due to a combination of things (major health issues, family problems, isolation and no support) I didn't perform as well as I'd expected on my exams. This was the first time in my life I struggled academically and, being a true perfectionist, I was completely discouraged, thought I had no future in A and soon left the program. The following year when the circumstances improved I decided to enroll at program B which I'm now about to finish. It turns out I'm interested in both subject A and B and found out I could combine them in my future career.
After I graduate, when I start applying for jobs (that would ideally combine A and B) do I need to mention that I first enrolled to study subject A and essentially dropped out on my resume? Could not revealing this information be considered as lying?