Total time would include the time I wasn't at work and some of the time I was. My kids lived under 24/7 adulting, moving from one adult-curated, adult-populated box to the next.

My mom parented between zero and few hours a week. Both her time and mine were representative of our respective generations. The major difference was her time spent was unchanged since before history.

And sometime between her gen and mine, US childhood was mostly eradicated.