@lemonshred I didn't test your save for very long (RL is calling) but while it's exhausting with 3 toddlers and a baby and the mother never gets enough sleep, I don't feel decay is faster than what I'm used to. There's always something ..
Can you, just for testing, try to play with just one toddler and see if it also feels the same way ? Just create a copy of your save and test on that.