Potty training regression can be a frustrating setback in the process of getting your child diaper-free. It's important to know that regression is normal and it happens to many children. The length of regression varies from child to child, but it can last anywhere from a few days to a few weeks. The key to overcoming regression is to stay consistent with the potty training routine and be patient. Regression can happen due to changes in your child's routine or environment, so it's important to be aware of any potential triggers. With patience and persistence, your child will get back on track with potty training.