Here's how I would look at it. "Okay, I had a really bad and unfortunate case of undertreated pneumonia.. l ended up getting really sick, intubated, and scared to death. Awful! But it finally got the attention it deserved.
Now, I'm getting stronger, they have looked at my lungs twice and they are improving. My life is getting better, the pulmonologist can see I'm improving. Time to push myself gently and see how healthy I can get in the next 4 months..."
But that's me - having survived heavy metal poisoning from faulty hips - lost most of my hair, had 3 surgeries, developed tremors, was days from having my thyroid removed when they figured out it had reregulated itself. And a multiyear lung infection with many medications and horrible side effects. (At my last visit, after 4+ years of visits every 3 months, CT scans and sputum tests, the pulmonologist said "I'll see you in a year unless you get sick again")

How do you feel about waiting 4 months? Are you getting stronger? Did you put that @#$g pulse-ox away?
Sue