my mom wants me to move back with her?

after living with my mom for 15 years of back and forth argueing i get what i want and can move to my dads (divorced) i been living here for about 2 months and i love it way better then with my mom and she wants me to move back on friday they said they "agreeded" on it they have joint custody but my mom has physical im 16 and i really dont wanna move back i tried talking to her but she wont budge is there any way to prevent this? my dad is moving my stuff there on friday so i need them to agree i can stay i cant just not go