This. Expectations have changed over the years. We had a proper bath, but had to fill it with big pans of hot water from the tub, so bathing was once a week as a kid. We washed daily in the sink, but it was a race to get it done during the TV adverts (they were only two minutes in those days)...
Hold on: "I pass one of my son’s wet flannels under each armpit before giving my arms, hands, face and intimate area a cursory once over." What, then wipe your son's face?