This week a new study showed that kids with autism wander as early as toddlers, so parents keep a close eye on your kids no matter what their age.  Medications do not work, but behavioral interventions do seem to help.  This podcast gives some examples.   Also, another study shows the efficacy and safety of melatonin for helping kids with ASD fall asleep and stay asleep, even after 2 years.   Melatonin may not be the magic bullet we need for sleep problems, but it doesn’t seem to hurt either.
 
https://www.ncbi.nlm.nih.gov/pubmed/31977588
https://www.ncbi.nlm.nih.gov/pubmed/30838492
https://www.ncbi.nlm.nih.gov/pubmed/31982581