Quick Answer Sleep problems affect an estimated 60% of autistic children, and they are rarely "just part of autism." Common drivers include an overstimulated nervous system, disrupted routines, and unaddressed physical issues like reflux, constipation, or breathing problems. The most effective first steps are: Build a consistent, low-stimulation wind-down routine Audit the bedroom for sensory triggers (light, sound, texture, temperature) Set a firm "screens off" point before