Interest is different from readiness — but it's a meaningful signal. The best readiness signs that predict successful training at this age are: staying dry for 1–2 hours at a stretch, being able to follow 2-step instructions, and having words for the functions.
Introduce the potty, don't push it. Get a small potty seat, put it in the bathroom, let them explore it. Let them sit on it fully clothed at first. If they go, celebrate enthusiastically. If they don't, no big deal.
Narrate what's happening. "You're sitting on the potty just like a big kid! Let's see if pee wants to come out." Keeping it matter-of-fact and positive builds association without pressure.
Watch for windows. Right after waking up, after meals, and before bath are natural times when success is more likely. Casual "want to try the potty?" at these moments catches real opportunities.
Don't manufacture urgency. If they're not trained by 20 months, 22 months, 24 months — that's fine. Early interest doesn't obligate early completion. The window may open and close a few times before full training sticks.
If things start clicking: When an enthusiastic early starter begins going consistently, a Benny Bradley's Potty Training Watch + Board Book bundle can help solidify the routine — the story introduces the concept in a way toddlers love, and the watch makes the schedule feel like their own idea rather than a parent's rule.