Does anyone know what support is available to guardian caregivers in nj?

I am trying to help someone who is undergoing extreme financial difficulty. He is the biological father of his daugher and has acquired guardianship (not adoption, foster care or kinship) of her 6 year old brother, due to the mother's rights being terminated. The 6 year old is not his biological son, hence the guardianship. I'm curious what type of guardianship support, subsidies or compensation he might be able to receive.