I would use Cocoa before pudding. The pudding will automatically have more carbs because the thickener is basically starch.

And on the carb count for cream, I think it reads as 0 because they make the serving size so small that it is under one gram and then they can legally say it is 0. When you start using like a half a cup or more at a time is when the carbs begin to add up, in a small way of course, but some are very carb sensitive.