I want my son to sign his visitation rights to me

Your facts are a bit confusing.  You call your son's child contact "visitation," but other parts of your narrative indicate the child lives with you full time. Either way, your son cannot "sign over" his visitation, not exactly, anyway (unless he was an active duty military member on deployment).  He COULD sign a 6-month temporary guardianship, or you could apply for a full-time guardianship, or you could move for grandparental visitation, or even custody, or seek to adopt the child.  Review the following explanations: http://willicklawgroup.com/child-custody-and-visitation/ http://willicklawgroup.com/guardianship/ http://willicklawgroup.com/adoption/ http://willicklawgroup.com/termination-of-parental-rights/ I strongly suggest that you consider what you are actually trying to achieve, and what sort of response both your son and his ex might have, and then schedule an appointment with this office or that of another family law specialist firm to get an idea of whether, when, and how to proceed, an analysis of your particular facts, and your chances for success.