I believe it's still possible but your chance is very small. I remember seeing a person in the US buying the 2018 Xma mini pochette in the middle of 2019 online.Is it possible to still buy the mini pochette with the venice/gondola animation from stores/online?
The website for the UK says call for inquiry which I know means it's out of stock. But since it is a christmas collection is it pretty much impossible to get it directly from LV now?
Have you tried to ring up Client Services and asked if they can source one for you?