I am sorry to tell you that once the order is placed, we are unable to change it anymore. However, since it was already placed to meet at door delivery, we don't have an option to change it anymore. Thanks for understanding. The preparation time of the merchant, the travel time of the delivery person to the merchant, and the distance between the merchant and your delivery address may all have an impact on the delivery time. I'm sorry to inform you that we have no control over the delivery time of the order.