Dax update...
He's doing a lot better. Only one accident inside the house after he got back from the vet. I took him out to pee every 90 minutes yesterday to give him some relief.
He slept thru the night with no issues and seems to be doing fine today. I think that we were smart to not wait to take him to the vet. I think we got it early enough that it didn't turn into a bogger problem.
Thanks to everyone for their well wishes. It really meant a lot.