Find your emotional support clown to take to the meeting.
On a practical note, read through your contract and understand your notice period and the rules around it. Do they require you to work notice, can they pay you off to not work it (check what they say about benefits in that situation). What does it say about unused holiday etc.
Do they offer training/certifications? Book/expense certification exams now, then you can learn the content between jobs/during notice.