You can edit your order by simply adding your forgotten items to your cart before the order deadlines.
Thats right no more duplicate orders if you forgot something!
Here is a list of order deadlines by delivery route:
Tampa: Monday at 12:00 am
Jacksonville: Monday at 12:00 am
South Florida: Friday at 12:00 am
Gainesville 441 Market: Thursday at 12:00 am
Madison: Wednesday at 12:00 am
At the top of the page it will say how much time you have left to order, if it says "You can place your order in __ days" then the previous order has closed.
You can review old orders by going to "Account" and selecting "Order History" from the drop down menu