The computer clock has not been changed. I never take that risk.

And, as for pausing for picking up collectibles, I don't see why that should make any difference as it does not slow down other activities. I am talking about the very first nursing mother in a new game. This seems to be the only time that the 'nursing' period takes a longer period time than usual. I have noticed that even 45 minutes to an hour into the game, the time left for the nursing mother is still about 120 minutes. This has been carefully compared to the time progress of the first tree growing in the orchard.