Big hugs Jessica to you, Carter and DH. This is so hard for you - there are no visiting care nurses for dogs to relieve you - but Carter IS improving.
As I said in a previous post most of us would still be flat on our *sses after surgery like his.
This sounds really tough but I think giving it a week is too little time. I think Carter needs more like a month for you to really assess how he's going to be. Maybe even longer.
Is there anyone who can offer you and DH a bit of "time off" from Carter nursing duty? That might help everyone a whole lot.
Dagmar