Once you’re signed in, head over to your Deliveries and scroll down to the order you want to edit. (Weekly orders are organized by delivery date, showing your past order, current weekly order, and up to 3 orders in the future.)
Select the drop-down menu under Delivery Date to select your desired date for that week. Whatever day of the week you choose will only update for the week chosen, not for all future orders.
To make a permanent change to your subscription, you can click on your name in the top right-hand corner, then Settings, then "Change" next to Default Delivery Day. This will update all weeks currently showing on the calendar as well.
One other thing to note: the available delivery days we show you are based on where you’re located. So if you don't see a day displayed, it’s not available.