Comment by bluGill

That depends on how much time it takes. Newborns grow up fast, in a few years he (she? - I'll assume he for convenience, adjust if you have better information) will have a kid needing to get between soccer and violin (or some such things). If there isn't too much effort he can find time for this project and it will help his life to have it all working.

We have no way of knowing, but it would not be at all a surprise if he has more kids in a few year - which makes accurate calendars around the house even more useful as everyone needs to know what everyone else is doing.