Fed daily
The starter
Fed every single day since 2012, and it does not get a day off.
The starter behind the counter has been fed every day since the bakehouse opened: through Christmas, through the week the ovens broke, and on the one day a week we do not open.
The 4am start exists because of it. A proper sourdough needs hours nobody sees, and the only way to have it ready by 7am is to be the person nobody sees doing it.