How can I help my son to prioritize me over my mother-in-law?

Salaam… My problem is my child don’t come near me he always attached to my mother-in-law…My son call my mother-in-law mummy and father-in-law papa…For me he call assiya mummy and for his father he called assad papa….At time of his birth i went into depression so my mother-in-law use to look after him….But now each every work of him i do but still he want to be near my mother-in-law…He even sleep with my mother-in-law…I want my son back..he is seven year old.I want he should be near me and love me…I don’t want to sepearte him from my mother-in-law but he should understand difference between us.He should give pirority as his mother…Please give me any dua or wazifa as soon as possible….Thanks Allahafiz….