How to worship God Datta even though my son's Aradhya devata is Krishna and Maa Durga?

[Smt. Chhanda asked: In my last query, You had told that my son's Ārādhya devatā is Lord Dattātreya. He is very fond of Śrī Kṛṣṇa and Mā Durgā. He tries to perform pūjā in his own way, sings devotional songs etc. But he is confused or may be not satisfied with the way to perform pūjā. I too want to help him as I am her mother, hence more responsible. I too try to help him as per my understanding. You please throw light on us on how to go in this direction in detail. At Your divine lotus feet.]

Swami replied:- God Datta is present in Kṛṣṇa and Durgā. All the divine forms contain God Datta with whom the unimaginable God or ParaBrahman is merged. God Datta sees the pure love, sincere service and selfless sacrifice only and not the unnecessary ritualistic methodology in worship.