What should I do

Basically me and my boyfriend wanna have a baby but he is scared because he already has a baby but doesnt see her as she was took off him because of his ex with her having social on her back. I understand were he is coming from but he and I are trying for a baby but it feels like im pushing him into it. I really would love a child with him as we are thinking about getting married but I dont wanna pressure him but it feels like I am help please :/