Confinement food

Hi Mummies, Do you know how do I go about ordering confinement food? How many days in advance do I order? Or can I order today, and the package starts the next day? I’m suspected of missed miscarriage and will be going for detailed scan next week to confirm. But I will want to do “mini confinement” to nurse my body back into good condition. As date of miscarriage is uncertain, I can’t fill in the “EDD” portion of the form before I pay.. any ideas how to go about it? Or I just email the company? #advicepls