I had my 15th infusion today and it went well.

My doctor came in to check on me just as the nurse was going to put the IV in. It caused her to hesitate because he was standing there watching her.
So he said, here, let me do it, I love to do these. He put the IV in
perfectly on the first try! He was giving the nurse pointers all along, since he's been involved with MS treatments and infusions for decades. I think she may have been a bit embarrassed to have an impromptu mini-lesson.
The other nurses there have told me that newer nurses often cannot insert IV's easily because they either don't have to in hospital settings, or they don't have the opportunity to do it often enough in their training.
Anyway, we were out of there by 1:15, stopped for lunch and got home early.