We'll be here Vicky (no doubt also suffering from "post weekend syndrome") so you'll be in good company!
I might even start a diary... one of those "enter at your own peril" type stories because I've "come out" at not doing Dukan 7 days a week because I've been fiddling around with coming in and out of ketosis too often, and going back in on a Monday, so I'm taking away the crutch. (I am walking more and am looking more at the old head stuff, which is where I have more problems than most!).
You don't yet know which pup you're going to have? It's true that they do all look rather alike, to me at least, although hopefully you can recognise some features? It was easier with my kitten because she was the only girl in the litter, and I wanted a girl!