Thats the point, I kept balance between them. After the Preps party I went with Josy and later, when you have to choose whether go with Maya or Josy, I went with Maya. And after the Halloween party Josy stated that I spend equal amount of time with them. After that, during episode 10, you have to choose again to spend time with Maya or Josy, so I have two saves, one for each one of the girls.
But now in episode 11, the dates are with Maya in the two saved games. Which doesn't make any fucking sense because in each of the saves I've prioritized one girl over the other, at least after making the relationship official. Also, I think it's stupid not to put the option to choose which girl to go with as it happened until now and that the game does it automatically for who knows why.