Welcome to the forum @Beclou.
I read on another forum recently (sorry, can’t remember which one) that the Wolfsburg factory is running around 11 weeks behind, so if build week 9 was a confirmed build week, it’s possible your car may not be built until week 20, unless your week 9 already takes the 11 week delay into account.
Hopefully the factory will start catching up lost ground so if the 11 weeks is factual, it’ll become less than 11 weeks.