Provide frequent bathroom opportunities suited to the individual puppy, including after waking, meals, drinking, and play. Reward the puppy promptly after it finishes in the intended place.
Supervise indoor access. A closely supervised leash, pen, or gate can help you notice signals and prevent wandering. Clean accidents and adjust the routine; punishment can make training harder.
Provide appropriate water access. Do not apply a blanket water-withholding rule to every dog. Ask your veterinarian about feeding, drinking, or toileting changes, especially frequent accidents, pain, or unusual thirst.