Autoship - Editing or Cancelling your Subscription.
First login to your account and click the "my account" button in the upper right corner of your screen.
This will take you to the MY ACCOUNT section. Click the "Subscriptions" button on the left side of the page.
When you click the "Add/Remove Products" button, it will take you to the subscription page for that product where you can add new products or remove selected products.
To add new product, click the golden "Add New Product" button. This will open a popup where you can either find your product with the top dropdown called "search product by caegory" or you can search by SKU # just below that. Your product search results will appear just below where you can enter the Quantity and click the golden "Add Product into Subscription" button. Lastly on the very bottom you will need to select your price option. The more your order the lower the price for each item.