Advice for a single mom

My husband and I have been married for 6 years, baby girl is 4 month. We separated when she was 3 weeks. He becomes really nasty during the separation and difficult to deal with.

Baby girl has been living with me, and he sees her for one hour on his working days. He complained about me keeping her away from him when I went to a friend’s wedding on one of his working days.

So I offered him 4 hours each day on his days off ( he has two days off), and he said he can not do it because it’s too long. This is his response.

I am just so frustrated with him. Feel like I am stuck, I can not rely on him , can not stay away from him neither.

Any advice for me?