how can i change my baby surname from her fathers surname to mine without her fathers consent? when we got married, a year after i discovered that he already married. what can i do to change my baby surname? thanks

Consult with legal experts. Ang alam ko lang kasi null and void yung kasal niyo tapos kung ililipat sa pangalan mo yung surname ni baby, adoption ata ang dapat iprocess. Di ko sure regarding dun sa without consent ng father