As a gaming expert with a special interest in life simulation games like The Sims 4, I can provide you with a comprehensive answer to your question about the time it takes for a baby to age up in the game.

In The Sims 4, the length of each life stage is influenced by the lifespan setting you choose when creating your Sims household or when modifying the game settings. There are three primary lifespan settings: short, normal, and long. Each setting affects the duration of the baby life stage differently.

Short Lifespan:
With the short lifespan setting, a baby will age up to a toddler after approximately 1.5 in-game days. This is the fastest aging speed and is ideal for players who want to see their Sims progress through life stages quickly.

Normal Lifespan:
The normal lifespan setting is the default option and provides a balanced experience. Under this setting, a baby will typically age up to a toddler after about 3 in-game days. This is a good middle ground for players who want a natural pace of life progression.

Long Lifespan:
The long lifespan setting is designed for players who want a more extended gameplay experience. However, it seems that there might be some inconsistencies or bugs reported by players, as you mentioned. Under this setting, it should take a baby longer to age up to a toddler, but the exact duration can vary. Some players have reported that their babies took nearly two weeks to age up, which is longer than expected.

It's important to note that the in-game clock in The Sims 4 is not directly tied to real-world time. The game operates on a 24-hour in-game day, which is divided into smaller time segments. Each life stage has a specific duration in these segments, and the game's speed can be adjusted to suit your play style.

If you're experiencing issues with a baby not aging up as expected, there could be a few reasons for this. It might be a bug, or it could be related to the specific circumstances of your Sim's household. For instance, certain in-game events or interactions might temporarily pause the aging process. It's also possible that mods or custom content in your game could be affecting the aging process.

To troubleshoot, you can try the following steps:
1. Ensure that your game is updated to the latest version to fix any known bugs.
2. Check for any conflicting mods or custom content and remove them to see if the issue persists.
3. Use the in-game cheats or testingcheats to manually advance the age of your baby if you're certain that it's a bug and not an intended game mechanic.

Remember, The Sims 4 is a dynamic game, and sometimes unexpected things can happen. If you're enjoying the journey of your Sims' lives, the time it takes for a baby to age up can be a part of the immersive experience.

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The duration of the baby life stage will vary depending on which lifespan you're playing. On the short lifespan, it's about 1 1/2 days to age up to toddler. On normal lifespan, it's about 3 days. My baby seemed to be bugged on the long lifespan because he was getting close to two weeks and still hadn't aged up.read more >>