Pleased that you have been able to come to a decision - and also pleased that you are going down the medicine route. There are newer and newer drugs coming out all the time - so hopefully there will be one to help your pup. I have a real fear of pups going under an anaesthetic when they are run down.
Yes, I have also learned a lot from this thread. I have had to deal with a lot of other things over the years - but not this one.
Be guided with what your specialist says - and the question that I always ask when I have found myself in difficult positions like this in the past - is - 'What would you do if this was your pup ?'
Heaps of Good Luck Wishes and Hugs !