Don't worry. If your baby needs to drink more, she will suck more and your body will adjust to what the baby needs (demand and supply). Breast milk will also adjust the nutrient whe you baby grow. In winter the milk has more fat as well. You may notice if you pump milk in winter How wonderful !!! So excited and forgot to answer question.
Usually, baby can suck more than you pump. Therefore, even so it appears she drinks less, but in fact she already has enough. However, 1 hour seems to be a bit long . May be you should check if she treat your nipples as a pacifier