Toddler Movement Milestones Fix
Growing Together changed how families experience early childhood in The Sims 4, and infant milestones quickly became one of the most rewarding systems in the game. Infants who master rolling over, sitting up, and crawling earn bonus skills that carry into toddlerhood. The trouble is that aging up does not always hand over the matching toddler movement milestones. That gap is exactly what the Toddler Movement Milestones Fix addresses, and for players who love raising families, it is a small mod with a big quality-of-life payoff.
What the Toddler Movement Milestones Fix Does
When an infant ages up into a toddler while carrying bonus skills earned from infant milestones, the game is supposed to grant the appropriate toddler movement milestones in return. In practice, toddlers could arrive in the new life stage with mismatched progress, leaving them unable to unlock all five movement milestones through normal play. The Toddler Movement Milestones Fix corrects that handoff so the milestones line up properly, letting your toddler continue earning recognition for skills they have effectively already demonstrated.
The result is a smoother progression curve. Toddlers who crawled and explored as infants no longer start from an awkward position, and you can pursue the full set of movement milestones without fighting the game's internal bookkeeping.
Requirements and Compatibility
What You Need Installed
- The Sims 4 base game with a current patch level
- The Growing Together expansion pack, since infant and toddler milestones come from that pack
- Lot51 Core Library, which this mod depends on to function
Compatibility matters here. The mod was built for game versions around the Growing Together era, and it works alongside most other milestone, family, and gameplay mods as long as Lot51 Core Library is present and up to date. If you run a heavily modded save, load order rarely causes problems with this one, but keeping your core libraries current is always wise.
A Note on Patch 1.124.55
The original creator notes that this mod should be obsolete as of patch 1.124.55, released May 12, 2026, because the underlying bug was addressed in the official update. If you are running that patch or later, you likely do not need the Toddler Movement Milestones Fix at all. Players on older builds, or those maintaining legacy saves, may still find it useful.
For anyone managing a large collection of fixes, the foxygame.net launcher streamlines the whole process: it lists the Toddler Movement Milestones Fix in its add-on catalog and installs it with a single click, so you never have to dig through folders manually. The launcher also flags version compatibility, which is genuinely helpful when a mod like this one becomes redundant after an official patch.
How to Install
Installing is straightforward if you follow the standard mod routine. Here is the process step by step:
- Confirm you are on a game version that still benefits from the fix
- Install Lot51 Core Library first, since the mod will not run without it
- Place the mod package file in your Mods folder, typically found under Documents and then Electronic Arts and then The Sims 4
- Enable custom content and mods in Game Options, then restart the game
- Load a save with an infant ready to age up and verify the milestones appear correctly
If you download Toddler Movement Milestones Fix from a trusted source, double-check that the file matches your patch level. Mixing an outdated fix with a newer game build can cause the same milestone errors you were trying to solve.
Should You Still Use It?
The honest answer depends on your patch. On current versions, the official fix makes this mod unnecessary, and removing it keeps your Mods folder lean. On older builds, or for players who prefer to keep proven fixes in place until they finish a long-running legacy family, the Toddler Movement Milestones Fix for The Sims 4 remains a reliable safety net.
Either way, the mod highlights something the community values: toddlers deserve milestones that reflect the skills they actually earned. Whether you install it today or simply appreciate what it accomplished before the official patch caught up, it is a tidy example of modders solving a real gameplay frustration.