Having a good relationship with your adviser is essential to having a good college experience. However, the larger the school the harder it will be to schedule an appointment. Advisers are paid to help you. Advisers will provide you with the best information regarding any concern.
Here is a free service offered to pre-college students that is centered around advising you no matter what college you go to. The College Advisor
Don’t forget you can always use Rate My Professor to get an early idea of what your adviser is like.