Add Abandoned (Shopify) Cart to Sheets Each Week, Email Only Newly Added Customers

Hi: I have a scenario set-up to add Abandoned Shopify Checkouts to a google sheet, filter certain products, and then email those customers through Gmail.

The process works, but I would like it to run a few times per week and only email customers added since the last time the scenario ran.

In its current state, each time the scenario runs it will email new customers added but also email past customers from prior runs as well.

Thank you for any insights or help.

Regards,
Chip