B1
before a particular time, or before doing a particular thing
Dictionary examples:
I set ten alarms in advance but still managed to sleep through them! (0.0)
I packed my suitcase in advance, then realized the trip was next month! (0.0)
He learned 'thank you' in five languages in advance, but forgot which country! (0.0)
If you're going to come, please let me know in advance. (41.2)