Younger nannies can bring high energy and enthusiasm, making them excellent partners for active play and keeping up with a mobile toddler. However, they may initially require more hands-on training to handle daily routines, potty training, or specialized infant care. Because they are still developing professional experience, it is important to be present in the early stages, provide clear, step-by-step instructions, and maintain open communication to ensure they are providing safe, consistent care for your child.