This part is so hard, but you have done the right thing for you.
He will be okay.
And so will you.
He is responsible for his well-being, and you are responsible for yours.
I remember leaving my horrible abusive relationship.
My cousin and her boyfriend moved the majority of all of my packed things, while he was at work.
I sat on the floor, at the coffee table he and I sat at every morning and night, and wrote him a long letter while I cried and cried.
All I worried about was him. But I did the right thing for myself, and I am so glad I did.
It hurt so much at the time.
But you're doing the right thing. It will hurt. It just will. The same way removing a bandage is horrible and painful, but you have to do it to get better.
You've done the right thing. Stick to it.
Give yourself time. Keep yourself safe. Protect yourself. It IS the most important thing.