Indeed. Quality thinking can't be forced or managed.
I really do feel that this time management business is a will-o'-the-wisp. Time spent thinking about time management is time not spent thinking about interesting problems. When I run across a room strewn with toys I don't have to think about 'space management', and when I switch between tasks I do so automatically and intuitively, mostly without thinking (and certainly never by firing up some piece of software).
Leonhard Euler had 13 children, who, the story goes, played at his feet. He also wrote over 1100 publications. Go figure.
[Update: Err, ahem, I read now that 8 of the children died. Perhaps he isn't the best choice of example.]
That’s why the first thing about what you are thinking while he sleeps is to take a break. Don’t do it!
The fact is, with a new-born in particular, it's not about controlling the time, it's about avoiding burn out and rest & stress management is crucial.