Need some tools for dealing with 6yo hitting 1yo (it pushes my BUTTON every time)

[Still_Learning]

(posted this in GD, but got no responses, relaly need some help here)

6yo DS has Asperger's.   19mo DD adores him.

Things have gotten a lot better with DS hitting/pushing her, but there's still an occasional slip up. 

When I see him hit her, my mama bear instinct kicks in for her btu apparently goes out the door for him :(   It infuriates me and I have absolutely no good way of handling it. 

So far, I've found myself yelling (more like growling), forcefully taking DS to his room (he refused to go on his own, so I carried him) and this morning I was restraining him by holding his shirt sleeves.

Thinking back on it, my stomach hurts.  I hate treating DS that way, I adore him, it makes me sick that I've yelled at him and been borderline physical with him (never hit, but grabbing him while I was angry)

I need a way to handle it better when he is physical with her.  I need some specific tools, some way to teach him that it's unacceptable while respecting him at the same time.

ANY suggestions appreciated. 

Thanks 

[Maluhia]

I wish I had an answer for you! Does his therapist have any suggestions?  Other Moms with ASD kids? 

[elmh23]

I've had to be cut and dry with my older kids.  You hit the baby, you go to your room.  You don't go on your own and I will pick you and take you there myself.