Caring for a baby aged 0-3 years is crucial for their overall well-being and development. It involves providing proper nutrition, ensuring a safe and stimulating environment, regular healthcare check-ups, promoting healthy sleep habits, and fostering emotional bonding. This stage is vital for cognitive, motor, and social development, laying the foundation for a child's future growth and learning. Attentive and nurturing care during this period is essential for the baby's healthy development and lifelong well-being.