Breastfeeding

Tearra
I am 6 days postpartum today and still do not think my milk has came in. I have been nursing and little one is doing great with it, it's just not enough for her so I have been supplementing with formula. I have also been pumping after nursing and always nurse before giving formula. Anyone else this far postpartum and still not a good milk supply? What is helping you guys with producing more milk?