Do you have a goose-neck kettle? I find this helps immensely for precisely controlling your pour. Typically, yes, I gradually add water until I reach my desired amount. The first pour is to wet the grinds, and I wait until just before they completely drain (if the grinds are pushed up to the side with a deep hole in the middle, I waited too long). Then I add in maybe 50-100cc increments (admittedly i don't keep careful track), making sure to evenly soak all the grinds, waiting until almost drained, then adding more. I typically use the same cup every morning, so I've gotten accustomed to just how much to pour and when to stop. New mugs can be a bit tricky. 😡