Years ago, my son was in a very similar position. He had a 4-year NROTC scholarship as an engineering major at a large, expensive private university 3,000 miles from home. From the very start, it was a difficult experience for him, both academically and socially. NROTC was a particular burden for him, not because it was all that arduous, but because it was the one thing that he had to do that almost none of his classmates had to - and hence it became the focal point of his anxiety. I was not sure that he would even make it through the first semester, and I was prepared to take the hit for his tuition bill if he couldn't make it to Christmas break. But he persevered, passed all of his classes, and went back for semester two. Even then, I assumed that he would pull the plug on NROTC at the end of the year and go to a much less expensive school somewhere back home.
All through the first year the battalion cadre was very supportive of him. They made it clear that the first year was meant to be a trial run, and that it was okay if he decided not to come back. They did strongly encourage him to finish out the year, and to take advantage of the Navy paying his tuition.
At the end of the school year in the Spring, he provisionally signed his resignation papers, with the understanding that he didn't have to make a final decison until the end of his summer NROTC training (CORTRAMID). To his and our surprise, he decided to go back for his sophomore year, which committed him to the program and to a four-year service obligation. To make a long story short, although school continued to be a struggle (mechanical engineering isn't easy for anyone) he graduated with his BSE, commissioned as a Surface Warfare Officer, and has been an absolutely stellar junior officer.
I am sharing this story with you because I think that even after a full semester it can be difficult to clearly assess the situation that you are in. Simply by virtue of the fact that you received the scholarship, there is no question that you have the character and academic aptitude to finish out the year. If nothing else, the Army is willing to pick up the tab, which ought to be incentive enough. But more importantly, I think that you will find that if you do persevere with AROTC and your technical major classes until the end of the year, you will have accomplished something that you can build on even if you do decide that AROTC is not the right path for you right now.
One more thought: It is only natural for a first year college student to be concerned about your future, and to try to make sure that you are in the right major to get the job that you see yourself in as a career. But I think you will quickly find out - and can easily verify by asking anyone who is a few years older than you are - that the world doesn't really work that way. You have forty or more years of work and family life ahead of you, and odds are that you will have a number of different jobs, some of which you cannot even imagine right now. That being the case, you just may decide that spending a few years as an army officer will be an advantage to you, and will give you the time and the resources to find out what you really want to do, and then go do it.