Wayside is committed to providing the care each woman needs, for as long as she needs it. The average length of stay is 60-90 days. We know that longer lengths of treatment creates the best long-term outcomes for our clients.Your length of stay will be based upon your unique needs. Before admitting into services, you will receives comprehensive and diagnostic assessments and then a customized treatment plan will be created just for you. Residential treatment is typically followed by outpatient treatment, which lasts for approximately 12 weeks.