How long is too long for your child to sit on the potty?? ⏱️ When we first start potty training, you may be thinking that any time your child spends on the potty is a win. And that’s true to a certain extent - you definitely want them to feel comfortable with sitting on their potty or toilet without fear or resistance. But it IS possible for your child to sit on the potty for TOO long. Sitting on the potty for extended periods of time can add excess pressure to the rectum and anus and lead to ne