I think I’m over my husband to be

So I’ve been dating this guy for a little over two years. We have very different personalities and we faced a lot of issues because of it. I’m conventional, traditional, I’m not too liberal but I wouldn’t call myself conservative. We had a lot of issues over him not having boundaries with the other gender, disrespecting me, constantly telling me he’d leave me etc. two or three months ago in a recent fight he pulled my hair once and said that I deserved it and I made him do it. Now the thing is, he always gets this way when he feels like he’s not in control. He used to belittle me, his mother would constantly say materialistic things and so would he. I pointed out his wrong doings a couple of months ago, after the fight where he pulled my hair. He’s made significant changes, he’s being very affectionate but - It’s like I don’t care anymore. I’m numb. I’m not jealous of the new women he tries to become friends with, I no longer care about what he thinks of me because I know what I’m worth and I’m tired of him belittling me nor does his opinion matter anymore. And if I’m honest I constantly think about what life would be like if I married him. We’re supposed to marry in April. Am I over him? Is it too late to call it off? Or would it be impulsive. It’s all I think about.