Going home every weekend?Watch
Expensive to do so if you go by train and not good for your spirits, because if you have a rough time emotionally at the start of uni and go home you will never want to go back.
Look, you're at least 18, it's your decision what you do. Explain you'll see them every-so-often but that you have to focus on uni, making friends etc. This is your life you are trying to establish.