I've noticed that the more often the game is paused the longer the nursing timer takes to count down. This happened in VV1 and VV2, but seems to be even more obvious in VV3.
Strange, I didn't notice that, maybe I wasn't giving enough attention. But once, when I changed the game from normal to fast mode I realized that some of the countdowns didn't change (one pg time and fire). Then I changed the game to normal mode and to fast again and things became normal.