I was born in 1972 (probably with Gilbert O’ Sullivan gently playing in the background)
My mum went back to work full time less than a month after I was born. She was a determined career woman and pushed hard for promotion etc.
When I told my colleague this, she said how unusual this was. She was born in 1980 and said that my situation was so unusual in that her own mother and mothers of the 1980 born kids she was in school with either didn’t work at all or only went back to work - full time at least - when their kids were around 12 - secondary school age.