So I'm feeling really discouraged about breastfeeding I've been breastfeeding for now about two…

So I'm feeling really discouraged about breastfeeding I've been breastfeeding for now about two months since my daughter was born and I'm feeling that I'm not doing everything I should I have a low supplies so I have to supplement with formula and I feel that she still not getting enough is there anything that I can do this for cheap to help my Supply go up?