DC1 had just turned 2 - it coincided with her starting preschool. We had a potty at home, but hadn’t really started potty training properly. But I think her seeing the older kids at preschool going to the toilets instead of having nappy changes clicked it in her little brain.
DC2 was around the same age, and was by far the easiest. He’s very close in age to DC1, and he more or less just copied what she was doing and potty trained himself 🤷🏻♀️😂 very little effort on my part.
DC3 was closer to 3 years old. Took a fair bit longer than the other two as well.