Is it selfish to keep a baby when that means your first will go without as much attention and things she deserves

I’m pregnant and want to keep it. My boyfriend doesn’t because he says it’s not fair to our daughter or our families because we can barely afford her and still depend on our families for help so we can get through school. He says our daughter deserves all the attention she can get and that we can’t afford another one which is all true. But I can’t see myself getting an abortion I just can’t. Idk what to do. I don’t think anyone is going to help us. I dont know how we will afford it or keep going to school.