My lo is 5 weeks old. I introduced formula at week 1 and feed her from breast only in the morning and at night, so twice . Now I'm feeling like I want to go all out breastfeeding. Is it possible to do this. How do I work up to this? Even after the two feeds she still acts hungry so I give her formula. When I try to hand express to make sure there is milk that comes out there is a little. I don't have a pump nor can I afford one. Is it to late for me? What can I do to get back at it?