Yes. You can edit the coupon rule and change it completely if you need. Follow these steps to do so:
Open the Automated Coupons app.
Navigate to the Coupon Rules tab from the main menu.
Then, choose the coupon rule you wish to update.
Click on the ellipsis menu (three dot) on the right of the respective coupon rule.
Then, you’ll be redirected to the coupon rule edit page. There, you can redefine Coupon Format, Coupon Expiry, Products, Coupon Usage, Expiry and everything.
Once done, click Save.