You're darn right, he doesn't know what he wants. And he's using you like a pinball in his machine...one day you're over here, the next day you're over there. He's controlling your buttons and it's turning you insane. I know because I've been there. But you're strong, don't let him distract you from what you need to do. It's not up to you to move out and look for apartments, especially when you have children, pack his bags and change the locks. You have every legal right to do that.
Create some space to take care of yourself and your daughters and become healthy. It's easy for me to say, because that's what I did. But it's not easy, I decided one day my life with my H was crushing me and I was dying inside. I had nowhere to go so I did the next best thing and made him go.
Once the noise stops, you'll find peace. I wish you all the best, stay focussed.