A child’s diagnosis with autism spectrum disorder (ASD) can be an extremely stressful time for families. Researchers suggest that the period immediately following ASD diagnosis is a key time for professionals to guide families by providing appropriate information about support options. This article describes a family support program, developed by Autism Spectrum Australia (Aspect). The Early Intervention Readiness Program (EIRP) is delivered during the challenging post-diagnosis period. During program involvement, families are provided with information and management strategies related to ASD-associated behaviors, and support options are identified. The EIRP aims to strengthen family confidence and facilitate a smooth transition into appropriate early intervention services. Preliminary program evaluation outcomes indicate that following program involvement, participants perceive a significant increase in their confidence in their understanding of ASD and capacity to independently make decisions about related supports. Participant post-program evaluations also verify the EIRP to be a useful post-ASD diagnosis support.