It is very common for toddlers to use the toilet for peeing but resist using it for pooping, often due to a need for control or fear of the sensation. To ease this transition, avoid turning it into a power struggle; instead, use positive reinforcement like sticker charts or a reward jar with small treats they can earn after successful attempts. You can also make the bathroom a more inviting space with fun books or toys that are only available during potty time. If your child is holding in their stool and struggling with discomfort, consult your pediatrician about temporary dietary adjustments or stool softeners to ensure they don't develop chronic constipation.