Hi there, Natalie! Thanks for getting in touch and welcome back to the forums. π
Sadly, there is no option to display just the first instance of a recurring event for the mini calendar widget. The option to show the first instance only applies to the calendar List Views, including the Event List widget.
One idea would be to use both widgets, but set the mini calendar widget to display zero events below it and let the Event List widget show the upcoming events for the month.Β I know that’s not quite what you’re looking for, but it’s a possibility.
I’d suggest adding this to our UserVoice page if it’s a feature you’d like to see. We monitor that page for popular new feature ideas to include in future releases, and I can see how that might be a useful feature for others as well.
Does this help answer your question? Please let me know. π
Cheers!
Geoff