I know it feels like his money because he's the one out at work, but he's making that money at your expense. If you weren't staying at home he would likely have to work less to be with them or pay a baby sitter. You shouldn't be left with nothing because of that. Have you tried talking to him about this? Just explaining that you don't know what to do for your side of the family because it os big and that because it is his paycheck you feel like you can't do anything for him? I think a nice talk with him could ease some of your worries.
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