I am soo sorry to hear about your pup. I know just how painful it can be.

I know this sounds stupid, but when I went thru the same thing with my chow, I took out all the old pictures I had of her, and I'd just sit there for hours with her on my lap, showing her the pix, remembering where we were, what we did, all while letting her eat the peanut butter right out of the jar. It seemed to me that she knew what was going on, but she was just being herself...my rock.