After a baby is born, you are not able to age them up for 30 in-game minutes. This mod reduces the delay to 1 in-game minute, which is the smallest the game allows, and you won't even notice, because it will have already passed by the time the labor animation finishes playing.
This also removes the delay when aging up to later age states, though that is much less obvious.
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If you're using MCCC's "pause immediately after loading a new lot" feature, there's something to keep in mind. If you use that feature, and then load a lot with a Baby that has never been loaded before (Neighborhood Stories, for example), that means its in-game timer hasn't started, yet! Unpause the game and wait for 1 in-game minute, and then everything will be fine. If you don't, the game will prevent you from aging the Baby up, and you will have to unpause and let the game run for a few seconds before you can try to age them up again, because it takes time for the menu to refresh. Just hold your horses and everything will be fine.
This mod requires XMLInjector.

