Are you in the uk? U could apply for universal credit if you need the money and apply for child benefits for your little girl too. It’s about £450 a month including child benefits
Yeah if your in the UK you can apply for universal credit as stated by others, child benefit and then even a health start card which is £34 every month for 1 child under 1 then £17 when their over 1. That's been a life saver for me as it pays for my little ones milk and all the fruit and vegetables for my toddler. Hope this helps
What country are you in? What country does he live in?