Do both. The fact that you are nearing the end of your studies and this pressing desire is coming up is an important element. If you were just starting out on a path and trying to make a decision my answer would be different. I would encourage you to change directions and to go for your dream flat out.
But what you’re telling me now is that you’ve invested a lot of time and money and have this idea that doing art would be better. While that might be true, it’s also likely to be frustrating, difficult, and have its own unique difficulties. The more important thing now is to prove to yourself you can finish something you’ve started. To drop out your last semester, regardless of if you go into that field or into art, is not likely to make you feel good beyond the immediate relief. There are many studies showing that when perseverance can be cultivated it—in and of itself, can be a factor in future success in anything you do—including art.
Except in very rare cases, I am not in favor of leaving one thing altogether and jumping into something that seems like a terrific solution. I think giving up is always valuable, and there are times when it is absolutely necessary for your well-being as this blog explains.
Before you give up on your current goal I’d encourage you to give yourself the proper opportunity to sample the art field more broadly. Talk to people in the field, talk to professors at the Art University, and get more information. Poking around on the Internet it’s a good start. But interviewing real people about what it’s like to be in a profession, students engage in their work at the school, and seeing what opportunities and enjoyment are possible will give you real experiences you can use to test out what you are feeling about the profession.
The reason I am focusing so much on not leaving is that when somebody puts in a lot of effort into one thing and then considers jumping ship the real question is: is this self sabotage?
Self sabotageKeeps someone from achieving or accomplishing their goals by undermining them the closer they get to accomplishing them. You can learn more about this here. The university you are at is very familiar with these issues and they are likely to have counselors there who can help.
If you can, let us know what you decide.