Your situation moved me deeply because your thoughtful nature and awareness are so keenly attuned to the dynamics of your situation. I hope I can offer a perspective that can be helpful.
Dan Gilbert is a Harvard psychologist who studies how we think about the future and try to predict what will make us happy when we get there. I am reducing his immense body of work to a few sentences which could not possibly do it justice, but in essence he explains that we don’t do a very good job of predicting what will make us happy –that we are more or less over-influenced by the present moment and that causes us to make systematic errors in what we think will make us happy down the road.
What tends to be true is that our happiness and what brings us a sense of contentment comes from having the courage to face our life circumstances directly. When we can accept our challenges and joys that are hidden in our life circumstance with an open attitude then we take our life and turn it into a work of art.
Stay with yourself. Stay present with your mind and your body. You already have a trusted therapist and a team of doctors. It seems to me the work is to stay present with yourself and don’t lose these moments of your life to indeterminate futures. What I am encouraging you to do is cultivate a mindfulness meditation practice. Notice where your mind takes you. Here is more information about mindfulness.
The shift is toward self-acceptance and believing that you will be okay with yourself regardless of what you decide.