Learn about co-occurring Down syndrome and Autism Spectrum Disorder (DS-ASD) on the page linked here
. The information is provided by the Down Syndrome-Autism Connection, an organization whose mission is "to provide specialized outreach through support, education, and resources to increase awareness of the unique challenges caused by co-occurring Down syndrome and autism."
The organization offers free online support for families with loved ones with DS-ASD. They provide a Facebook support page and host a monthly Zoom support meeting. More information can be found at this link