I am a beneficiary derivative of an I-130 petition sponsored by my grandmother for my parents, my sister and me. I believe I'm protected under CSPA. I'm 25 years old. The I-130 was filed in 2002 and approved in 2009 so it has been pending for 7 years. So my age should be 18 after adjustment. The priority date will be current next month but my father has already been scheduled an interview next month. The emails from NVC no longer included me in the case so only my parents and my younger sister submitted the application fees. Since I am currently studying in the US, do I file DS-230 or I-485?