We’re all different. Storage capacity between women varies enormously (and it’s not always about how breasts look from the outside). Some babies may always want the second breast and some may never be interested in it. We follow our babies’ cues. When a baby is very small, they will often fall asleep on one side when they have reached a point of feeling satisfied. You might then change their nappy or try and wind them and then at least offer the second side. We should remember that breasts are never really ‘empty’. Milk is made all the time and when we say a baby has ‘emptied the breast’, they’ve just reached the point where staying on is no longer worthwhile.