Hi Caroline, and welcome to the forum! I have several good friends who live in Denmark, two work at the University of Copenhagen, and the other lives further north, in Aarhus. I've had the pleasure of visiting Denmark twice, once in summer once in winter, It is a beautiful country!!!
You have already received some good advice, so I'll leave that where it is. I think you will see a big change in him in terms of being able to "hold it" overnight, and not needing to poop QUITE so often over the next few weeks. At 8 weeks, he's still an infant. By 12 weeks, you'll still definitely be working on potty training, and I doubt he'll be able to last for 6 hours without an indoor potty option, like pee pads or a litter box, but things will be getting MUCH easier.
I've never had a big dog, but from talking to many people who have, it does seem that potty training takes longer with the small breeds. BUT don't let ANYONE convince you that it isn't possible. It is most definitely possible, and isn't even all that hard as long as you are very persistent about supervising them, and restricting their movement until they are fully potty trained.
One more thing to remember... we have a forum "rule"... You MUST post pictures!!!