Hey @jadeyechan,
Definitely agree with @Mailbox Manny and their suggestion of starting slow and then building out! It’s always best practice to start with a good foundation and testing before expanding outwards to more complex flows.
As Manny had mentioned, building out all three of those pre-built abandoned cart reminder flows will cause them to overlap one another. This is because all three of those flows are utilizing the same trigger, a Checkout Started event. Because flows are an automated process that are sent out in response to a customer’s actions, when a contact triggers this Checkout Started event, they would be queued up for all flows that are Live that use this trigger.
If you haven’t already, I would recommend taking a look at the Getting Started with Flows, Guide to Creating a Metric-Triggered Flow, and How Contacts Move Through a Flow Help Center articles to learn more about how flows function.
I hope this helps!
David