Bio-Dad Refuses, Can my child file for adoption himself at age 12?

Hello, hy son is now 8 1/2 years old, he has seen his bio-dad about 6 times since he was 13 months old. Each visit lasts from a day or so. This last weeks visit lasted 3 hours. My son is scared of his bio-dad because he told my child NOT to call my husband Daddy because it hurts his feelings?? (my son started calling my husband Daddy about 4 years ago himself) Who's feelings do you think got hurt the 7 year old or the 32 year old. This particular incident happened last year and that is why my son doesn't want overnight visits anymore. I am the sole custodial parent and the bio-dad has no court order visitation rights. His pay is garnished for support though. We were not married when my son was born. The bio-dad was abusive towards me, that is why I left him when my son was 13 minths old. The bio-dad is now remarried with three other children younger than my son and two children that are older than my son that he refuses to talk about. I am not allowed (by bio-dad) to speak to his wife and can only contact him by his cell-phone. Under California law does anyone know if my son can file for adoption himself at the age of 12? Any help would be greatly appreciated. PS. bio-dad lives in New York state.