OP, sounds like you are experiencing burnout. I was in the same boat as you later in my intern year and through most of 2nd year. I ignored it. I thought my lack of enthusiasm was due to not liking medicine anymore. I made a grave mistake of not seeking help from faculty and mentors, and instead fixated on my interest in business and started looking for ways out of medicine. There was, unfortunately, some low hanging fruit that convinced me to resign from my position in residency and start a new career outside of medicine. A tremendous weight lifted off my shoulders after leaving, but it didn't last more than a year. While I enjoyed the business world, I started to miss a little bit of medicine. At first I missed treating just a few procedures here and there, which turned into missing treating this disease and that disease, and before long I was pulling out my old medical books because it would bother me that I couldn't remember how to treat whatever random disease that popped into my head, and then I started reading these same books just for fun. Through happenstance, I reconnected with some of my previous faculty on a hiking trip with a mutual friend and when they asked me out of the blue if I would ever consider coming back to medicine, I knew what the answer was. Trust me, there's nothing so heartbreaking as suddenly realizing that you were *this* close to finishing something you've worked a decade plus towards and you walked away from it. I still have an interest in business, but having that year away from medicine and reflecting on it now, I know that my interest in medicine is greater and I have a new understanding that business and medicine don't have to be mutually exclusive. I am actively trying to get back into residency now, but in a slightly different specialty.
The best advice you will ever receive is to finish your residency. You don't have to love it right now, just show up and do the work and make sure your patients are getting good medical care. There are so many clinical and non-clinical opportunities for board certified docs that pay very well and don't necessarily require patient contact. Yes, you can get a medical license in most states after completing intern year and legally work as a physician, but trust me, the jobs are few and far between - even worse if you are looking for stability and benefits. Everybody wants BC docs, as most insurance will require it and employers have a hard time trusting any doc without it. Even if you don't work as a doctor after finishing, having BC physician on your resume will be invaluable and it shows you follow through.
Lastly, seek help for burnout. I would have denied up and down that I was going through burnout. I was convinced that I just didn't like medicine. I was 100% wrong. I'm paying for it now, literally and figuratively. I am fortunate in that I am working as concierge doc now, but if this clinic were to ever go under or I get fired, I'd be up the creek because I got unbelievably lucky landing this job - right place right time. It won't happen again. So finish the residency. You will not regret it, I promise.