Siri Cannot Find a Shopping List... Repeatedly.

When I ask Siri, "Hey Siri, add [item] to my shopping list", I get the response "I didn't find a "Shopping" list. Do you want to create one?". I say "Yes" and it creates a new list called "Shopping" in my Reminders app and adds [item] as a reminder in the new "Shopping" list.

This is all fine and dandy, except for when I want to add something else to that same list and I get the same response from Siri saying "I didn't find a "Shopping" list. Do you want to create one?"...

Any help here would be appreciated as I often add items to my shopping list verbally via the Google assistant using my Google shopping list and am disappointed to see Apple fail at this.

Thank you :)