So I looked it up on WebMD - seems for brushing I am right and I follow some of what is written here:
Brushing should last at least two minutes, Sesemann tells WebMD. Three minutes is even better, Price says.
Most people fall short of both time lines, Sesemann says. "It's an arbitrary number, but it's just so people take the time to clean all the surfaces." He often recommends people divide the mouth into quadrants and spend 30 seconds a quadrant. Some toothbrushes include built-in timers.
To make the two minutes go faster, Sesemann says he ''multitasks,'' fitting in a little TV viewing as he brushes.
Believe it or not I do the dividing thing - but a bit different - I do one side inside/then outside and then the other side; then the same thing on top and bottom. Sometimes I even count to make sure I brush each section at least 10 times.