Can you eventually move to weekly sessions, once you get started? I would be struggling with the whole change thing (I nearly wound up hospitalized when my therapist was just more than likely leaving in a few months. He didn't but when he retires I will be in very bad shape) too but I know that trying to guess too much about what it will be like only makes it harder for me. Can your current therapist communicate with the new one and note that you've seen her weekly and she feels this is beneficial?