I can tell you it is less than you think.
In 2020 peoples attitudes towards food has changed drastically over the last 100 years. 100 years ago there were very few places to buy groceries and certainly no fast food restaurants to fill the hunger at 3am.
There seems to be a constant hunger in all of us these days and with food available 24/7 that hunger can be tamed the moment it becomes a thought. With many places offering delivery there is no need to leave your house anymore which does not help with reversing the decision to have a burger and fries at 11pm because you are still awake, cannot sleep and you are a little but hungry (and most probably feeling emotions you don’t want to feel and thinking about things which you have been thinking about for years).
Food not only helps with the hunger but it fills a void. That void may be loneliness, a lack of love or disconnection from yourself. And, because you have used food as a way of suppressing your real emotions it is now a mindless habit; and you cannot hear that loving voice inside of you which is gently trying to help you to stop eating your feelings and to feel them as they should be felt.
So, now that all of this madness is on your doorstep and you have no choice but to isolate, the thought of going without all the food you love, or even any food; for 2, 3, 4, 5, 6 weeks (however long) this is completely scary to you. Your body is going into panic mode and you are causing yourself stress thinking about not being able to eat how you normally would for an extended period of time.