Diné Parents Taking Action Trial

The goal of this clinical trial is to learn if a family support program helps Navajo parents and guardians of children with autism spectrum disorder (ASD) or other developmental concerns. The main questions it aims to answer are: * Is the program something families find useful and easy to take part in? * Does the program raise parents' knowledge and confidence in using strategies that support their child's development? * Does the program help children improve in areas such as social communication? Researchers will compare two groups: * One group of parents will join the program right away. * The other group will join the program after waiting. Participants will: * Be randomly placed into the "immediate" or "waitlist control" group using simple randomization. * Take part in sessions led by trained Navajo Family Advisors, who are parents of children with ASD. * Learn and practice strategies they can use at home to support their child * Answer surveys about their experience, knowledge, and their child's progress