I really wanted to breastfeed with this baby but it never seems like enough. I can hold her and be practically chained to the couch for hours and as soon as I put her down she starts crying for more. She's almost 3 weeks, and I'm not sure if it's because she's a newborn or because my milk just isn't cutting it. I've tried giving her formula and she goes right to sleep after. I just don't understand, it's really frustrating and discouraging. I think my supply has also gone down significantly. Any tips? I'm not sure what to do.