How can i get full custody if my.son is being abused?

To pursue full custody due to abuse, document any evidence of the abuse, such as photographs, medical records, or witness statements. Report the abuse to the appropriate authorities, like child protective services, and file a petition for custody in family court. It's advisable to consult with a family law attorney who can guide you through the legal process and help present your case effectively. Prioritize your child's safety by seeking immediate intervention if necessary.