Yes. The order cart is filled by default according to your campaign pledge level, but you may add or remove products as you see fit! When you’re done, simply proceed to the checkout where you will be asked to cover any difference between your Gamefound funds and the final price of your order.
IMPORTANT NOTICE: Manually you can only keep or increase your total pledge value. If you want to lower the total value of your pledge, you have to contact our Customer Support here:
https://support.awakenrealms.com/support/tickets/new