Good evening Margaret and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
Before you do anything, I would recommend making a backup of the database (just to be extra safe).
Once that’s done, there are a couple of things I would try to speed up the process:
- Try adding an end date to the recurring events (to ensure they do not go years into the future – that would also maybe avoid deleting a bunch of events)
- Using our advanced post manager plugin AND increasing the number of events displayed (using screen options), you should be able to batch delete extra occurence of events with the Move to Trash bulk action.
Let me know if that helps.
Have a great day!
Geoff B.