He has said to you, according to his post, exactly what he wants. Listen to him. Honor his wishes.
Don't care for him unless he asks, and don't do for him what he can do himself. The last thing he needs for his recovery, from both this ailment and alcoholism, is a codependent, enabling girlfriend.
As for this: "We are very close, I was in the room when the doctor first told him. In fact, the doctor told me before he even woke up from anesthesia. As a caregiver in the very early stages of all this, I am trying to be there for him, keep life as normal as possible and not set many, if any, expectations. While I want life and our relationship to remain as wonderful as it has been for the past 2 years, I also want to help him get and stay healthy."
Why does this matter? Did he ask you to do any of this?
Take what you want and leave the rest.
Cyranoak