You don't say here whether you are disabled in some way and unable to take care of yourself after age 18, so I'm going to assume that you're under 18 and that you are not disabled. When you turn 18, you are an adult and can move out if you want to. At that point, your father also would have no obligation to support you. The only way he would still be legally responsible for you past age 18 is if you have some problem that would lead to you being declared incompetent and unable to care for yourself, and that has to be done via a court order.
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