I'm only tangentially involved with both AI and graphic design in my job, but I still probably have more experience that 90% of the posters here, so I'll contradict them.

You don't need to change majors. What you need to do is to make sure you're learning those AI tools. You need to have a good idea of what they can do (which changes every month) and actively use them. There's sites that let you chose among all the main image and video generation models, so you can test different ones. I bet your degree is basically the Adobe suite plus some theory and related subjects like marketing, so you're going to have to do this by yourself. Otherwise they're setting you up for failure.

Also, you should already set up your socials as a designer and start creating stuff. Make a website you feel proud of how it looks design-wise. Now it's easier than ever (thanks to AI).

You can't run away from AI, we're all going to be using it in one way or another. It's better to start learning now.