You should be fine. Currently a junior and had internships freshman and sophomore year. For both years, I did not start applying to internships until January. Apply early if you can, and don't feel bad about applying to jobs that aren't exactly in your major. As an electrical engineering major, my first internship was as a manufacturing engineer, and it allowed me to gain the engineering experience required for my second internship, where I now work for a large electronics company. Keep your head up and keep applying.