but I still cant help but feel guilty about taking money from her.
Why do you feel guilty? Who is fighting for your marriage? Who wants to break it up? If the shoe was on the other foot do you think your wife would feel guilty about the law giving her the money she is deserving? It's just a fact of the child support calculator. Your wife knows approx how much she will need to pay.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.