How can special education teachers ensure students receive FAPE if federal IDEA funding and oversight are eliminated?

Given that the Trump administration is actively reducing the federal staff responsible for overseeing the Individuals with Disabilities Education Act (IDEA), what practical steps and strategies can state and local special education teachers realistically implement to ensure students with disabilities continue to receive a Free Appropriate Public Education (FAPE) if this federal oversight and the systems for funding distribution are permanently dismantled?