How do I get his rights revoked since I have been solely taking care of this child since he was 2 months old?

Child will be 2 years old this June. Father left before child was 2 months old. He rarely contacts me, has only seen child a handful of times and was not direct. Child doesn't know who he is. No support was made (not court ordered). Only contacts for drama, has discussed signing rights over with an individual that told me directly, that person said he would be a bad father if he did so now he refuses to sign rights over but does not care to have anything to do with child. Nor does he so much as check up on her.