Try the Carroll County Assisted Living Program for young adults in Carroll County, Georgia (West Georgia area near University of West Georgia). It's part of Carroll County's DFCS (Department of Family & Children Services). Contact person: Virgil Tucker.
Also try Georgia's CASA program (Court Appointed Special Advocates), who has an annual convention in Georgia. I received information that a young adult who was in foster care spoke about Georgia's Independent Living Program and how to utilize Georgia's resources. He may be reached at:
Anthony@fostercare.com.
Blessings to your nephew, family, and you!