Three weeks into training, and Christina, who always goes to the potty willingly and is very proud of going potty, has yet to inform me of her need to go. If I get distracted, which happens often, she will just go in her pants. We do LOTS of laundry!
Here's a website on potty training Down syndrome children. My dear friend, a mother of child who began potty training at 18 months, and at age 4 still needs reminding, has advised me to take it slowly. Everything our children do takes longer, especially something as complex as potty training.