Not to pick on the vet...but Christofur may have noticed the cotton balls a bit more if they were bright red, or even a dark colour. If I recall correctly, cats are pretty much colour blind except for red and one other colour (green?).

Also, omega 3 oils apparently do good things for the nerves, as in the actual physical nerves in the nervous system. I wonder about adding some to Christofur's diet since he is still growing?

Wishing that cute wittle boy a long and happy life!