Okay, I just thought of another way to put it. You can think about it like this: before a year, baby's primary nutrition is breastmilk. After six months, some solids for taste, texture and motor skills. After a year, solids become more and more important, and breastmilk becomes the "dairy" portion of a diet that is also going to include fruits, vegetables, meats (unless vegetarian), grains etc. And eventually those additional components diversify baby's diet and provide all the nutrients she needs. So if you don't think baby is getting enough "dairy" through breastmilk, you can add animal's milk or other dairy sources like cheese or yogurt. But if you're satisfied that she is getting enough breastmilk (and usually nursing five times a day is plenty in that regard), then you can add non-dairy sources of other foods. Either way, you don't need to pump when baby is getting the non-breastmilk food, because it's part of the natural process of weaning. And of course there will be fluctuations in this process too. Baby may go through phases of drinking more or less breastmilk - on a day by day, week by week, or month by month basis, and your supply will adapt accordingly.