I found out my vocal folds have hardened. Can they revert? How will/does this effect my singing?

A vocal specialist just diagnosed that my vocal folds have hardened. I've also been diagnosed with Pulmonary Fibrosis. I'd like to get as much information as I can on both as to how to compensate for both in terms of my singing.

I'm trying to find out what my voice is lacking compared to how it would sound if it were healthy...I'm going to need to ask questions in a number of ways because I'm not sure how to pose them to get the exact info that I need so please bear with me.

Is it possible for the cords to return to their normal condition? Is there anything that I can do to help them return to, or at least close to normal or is this something that I will simply have to adjust to?

In what way do hardened cords limit the ability of the voice to sound as it should?

How hardened cords effect/change the voice in terms of how my/any voice would sound like if they were completely healthy?
What is my voice lacking now compared to cords that are completely healthy?

Is it necessary that I adjust my technique to compensate for the stiffness? If yes, in what ways should I compensate and how would I go about that in the safest and healthiest way possible.

Are there techniques that can be used to help with my breath taking the Fibrosis into account? Singing live is out of the question but still want to write, sing and record songs in my home studio. I can only sing a few lines at a time right now and am really looking to improve my breath capacity so singing will be less work.

Thanks so much to everyone for your help with this!

Timothy "Snake Eye" Burns