Baby Clock I Really Want To Stock Up Milk, But If Baby Nurse Round The Clock 24/7, When's The Best Time To Express/pump?

I really want to stock up milk, but if baby nurse round the clock 24/7, when's the best time to express/pump? - baby clock

Morning or afternoon?
Before or after the baby to breastfeed?
Usually when the baby nurse, I can not do something.
But if I am to express or pump before it to reduce its shares?

Thank you!