Ladies... Me and the oh are thinking of having a date night tomorrow, first one since Caleb was born! Just cinema and a bite to eat. Caleb will be staying with my parents, sister and her oh. Well as I exclusively breastfeed, I don't know if I'm goin g to be able to express enough milk before then if so How many ounces will I need? My mum mentioned giving him formula instead. But will it work? Mess my supply up? As I want to continue breastfeeding after. Thanks☺️