Help please

bella

So basically I had my baby by c section 2 weeks later he left me . He doesn’t pay a penny and wants to see him once a month and demands that he chooses the date when and the times. He’s nasty and puts me down and makes me feel like rubbish . He’s 6 months old my son and I don’t know what to do about it . I just know it can’t carry on like this because it’s breaking me . He sees his other child three times a week but not his baby . It makes me really hurt inside he wants to see one and not the other . He says it’s because the other one lives nearer and gets dropped off . I don’t buy it . He needs to change I just don’t know how I can bring about change . I always let him have him and I’m always on time for pick ups and drop offs. I just look like a pushover and I’m really struggling doing it all alone and he just laughs at me . Anyone any suggestions on how I move forward ? Thanks