Strategies for Promoting Sharing
Use Visual Timers: Use tools to show exactly how much time is left before a turn ends.
Practice Turn-Taking: Focus on "taking turns" rather than "sharing." Use games that involve passing objects back and forth.
Social Stories: Utilize short, visual stories to explain the steps of sharing and its positive outcomes.
Model the Behavior: Verbally explain when you are taking turns or sharing items.
Prepare in Advance: Warn the child before a turn ends to reduce anxiety.

Autism and Over-Sharing
In a social context, some autistic individuals may "over-share" personal details, often due to difficulties with social cues, intense focus on specific topics, or anxiety. This is not intended as rude, but rather as a genuine effort to connect or communicate directly.

https://affectautism.com/2024/03/01/sharing/

https://www.autismspeaks.org/expert-opinion/tak...

A Developmental Perspective on Sharing | Affect Autism: We chose play

https://affectautism.com/2024/03/01/sharing/

My son is also possessive over his food, things, and people that he likes. I am Okay with it though because if your child or adult is a good sharer, my feeling is someone will creep right up to take advantage of their kindness..... That is how I see it.

I don't share cuz ash puts everything in mouth. She's very oral. At school I ask them try not let others touch ash things which I know hard but she licks, sucks n bites n gets sick very easily if other students touch her things.

My son is very selfish. We have been working on this a long time. If I'm eating something and he asks for some naturally l give it to him. However if I ask him to share he never does.