I've always crate trained my dogs, but I've never had pups as young as the two girls I'm currently fostering as of this evening (they are 4 weeks old). Right now I have them both in a medium sized crate, but I know they are way too little to start real crate training. I'm planning on getting up with them every couple of hours and taking them out through the night tonight, but I'm thinking about taking a different approach for now, at least until they are 8 weeks old.
I have a X-Large crate (Great Dane sized) and was thinking of setting it up as an exercise pen for the both of them lined with pee pads. As they get a little older I would remove pee pads until there is only one in a corner. Then at 8 weeks they would graduate to an appropriately sized crate to start actual crate training. Does this sound reasonable?