As a fellow asthma sufferer, I feel your pain. As far as the meds go, I also was on that exact routine before my Nissen surgery, so I'd say you're on the right track there.
Keep in mind that if your lungs/upper GI have been irritated/burned, it will take a LONG time for them to heal. I speak from experience here. You'll need to be very, very patient, and follow a very strict diet as things heal.
I was also hospitalized with my asthma that was exacerbated by reflux, so I understand. I'm sure in the hospital they put you on high doses of IV steroids to try to calm things down. Your stomach couldn't have tolerated that treatment right now.
Are your vocal chords spasming continually, or is it intermittent? While I didn't have that problem, at one point my asthma doc thought I might, and gave me a document describing how to practice relaxed breathing for when those (non-existent in my case) spasms occured.
Here's a link with some information regarding the exercises. You can search the net for more (Google "Vocal Chord Dysfunction Exercises")
It's extremely important that you follow your doctor's advice to the T, as the healing will take all that and more. It will get better, but get ready...it'll take time.