need to move out of toxic home, what do i do?

hello. i currently live with my sister and mother, my dad lives close by. the environment at home is always stressful, and the way my mum treats us is toxic. i'm in therapy, and even my therapist agrees that i need to get out, as my anxiety is made worse by the conditions i'm put under- as well as creating other struggles regarding my mental health. i have the option to move in with my dad when he moves in with his girlfriend, but that is 2hrs away from where i live now and where my friends currently live. and id need to get two trains just to commute to college. im talking with my dad soon about all this, do you think there's any options other than to move far away from everyone? maybe my dad will move somewhere else instead that's closer(the most he told me so far is he says the place he's in right now isn't permanent and that moving in with his girlfriend is a preference), but i need to talk to him about it first. any suggestions and input are a big help, i just need to get out of this house, but i'm scared the distance will be too much, and that ill be too far away from my friends. what do i do?