Many of my peers now have multiple children…

Many of my peers now have (multiple) children, and I’m unsure how socially acceptable it is to not be able to remember their children’s names (despite having seen/met them a couple times). Being the usual INTJ, I’m not really interested in their children, and I struggle to remember the parents’ names in the first place. So every time I meet them there’s the awkward.. “so.. uh.. how are the ‘babies’ doing? (hoping that there’s two, not one)”