Sage Narada’s compassion

The very intention of Sage Narada meeting Sage Vyasa was that the world would be gifted with the great Purana called Srimad Bhagavatam
The very purpose of Sage Narada meeting Valmiki was that the world would be gifted with the great epic called Ramayana.
The very purpose of Sage Narada meeting Prahalada’s mother was that the demon called Hiranyakashipu would be killed.
Was there a reason behind Sage Narada meeting the little child Dhruva? What was the intended benefit?
Sage Narada had a very similar situation in his youth when his mother left him, and he went to the forests to meditate on the Lord.
The little child Dhruva was in a similar state and as an experienced person, Narada, out of sheer compassion, wanted to impart the knowledge born out of his experience to this little child!