Some autistic children use a great deal of energy managing sensory input, communication, social expectations, school demands, and transitions throughout the day. By the time they get home, they may have very little capacity left and need quiet, rest, fewer demands, or time alone. What looks like a sudden behavior change may be a sign that the child has reached their limit. A calmer environment, predictable downtime, and reduced nonessential demands can help with recovery. If changes are persistent or severe, look at the whole picture, including sleep, health, stress, school demands, and other possible causes.