I'd probably recommend looking at material that discusses harm reduction in the context of substance abuse, as that tends to focus on empowering drug users so that they can identify risk and try to minimise it in their drug-taking behaviour. The harm reduction approach also makes it easier for people to slowly access recovery/rehabilitation services on their own time, empowering them to make their own decisions about what is right for them and when.
Some articles that may be a useful starting point:
Substance abuse professionals attitudes regarding harm reduction versus traditional interventions for injecting drug users. Bonar, Erin E. ; Rosenberg, Harold. Addiction Research & Theory, 2010, Vol.18(6), p.692-707.
Empowering the disempowered: harm reduction with racial/ethnic minority clients. Blume, Arthur W. ; Lovato, Laura V. Marlatt, G. Alan ; Tatarsky, Andrew. Journal of Clinical Psychology, 2010, Vol.66(2), pp.189-200
Harm reduction by a “user-run” organization: A case study of the Vancouver Area Network of Drug Users (VANDU). Kerr, Thomas ; Small, Will ; Peeace, Wallace ; Douglas, David ; Pierre, Adam ; Wood, Evan. International Journal of Drug Policy, 2006, Vol.17(2), pp.61-69
In addition to the above recommendations, literature about user involvement could be helpful:
Neale, J., A. Bouteloup, M. Getty, C. Hogan, P. Lennon, M. Mc Cusker and J. Strang (2017). "Why we should conduct research in collaboration with people who use alcohol and other drugs." Addiction 112(12): 2084-2085.