I grew up in NJ and had work headquarters there for a while. Don't do GW to get to NJ, take tappen zee or whatever it's called now.

VCA Vet Specialists of CT in West Hartford has always been great to us. They also have a "specialty" (aka emergency) wing so if the general practice doesn't have availability, you can go to the other side, a little more expensive and maybe a longer wait time, but might be easier to get into.