Well, if you follow the proper guidelines, you can collect breast milk at different pumping sessions on the same day and place it together into the same container. (verywellfamily.com)
Combining the breast milk from different pumping sessions into one container can make storing and transporting your breast milk easier, and it can certainly save space in your refrigerator or freezer. (verywellfamily.com)
There are plenty of different pumps on the market, so you'll need to play around with different ones until you find one you like. (health-and-parenting.com)