Don’t even pack. Just get up and go. Send a text later requesting that your stuff get mailed to you.
This might seem like small potatoes, but it’s not. A surprise partial veganization is a hostile move and should be treated as such. Which is not to say that going vegan, if carefully considered, is a bad idea. It’s a perfectly fine and valid choice. But springing it on someone our of nowhere, like they just turned 30 — only more traumatic — is terrible.
On what planet is, “Surprise! I threw out all our cheese!” good news?