Once you’re signed in, head over to your Deliveries and scroll down to the order you want to change. (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 Meal Plan to select your desired amount of meals for that week. Whatever 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 Weekly Default Plan. This will update all weeks currently showing on the calendar as well.
One other thing to note: when you upgrade or downgrade a plan, we’ll automatically either add or remove meals on your existing menu. So take a look and update your meals.