Hi Steve - I know you probably don't feel in a congratulatory mood but I'm going to congratulate you anyways for getting through treatment. It is a huge accomplishment! I can appreciate your question "Now what?" I felt the same way. The fatigue is normal, the voice issues are normal. That being said, the sooner you begin working with a speech therapist, the better. It's WAAAAAY to soon to even think about your larynx being non-functional!
So my answer to your question is: do things that feel good, even if it is for short periods of time and begin voice rehab!
Take care!