Foreign language requirements only require that the student studies the equivalent of the specified number of semesters. Your community college should allow you to jump right into an intermediate course because of your high school education. Head over to the course catalog of your CCC and check the prereqs for the course that you are supposed to take after “three to four years of high school study”. It should not be the introduction course.
So, you’ll probably be able to skip the first year and only take two. Regardless, I would take a course starting with the Spring because your past knowledge will begin to fade with time.