@sarahstarkey omg yes! My daughter used to drink about the same amount around that age! She is now about to be 2 and although she eats solids throughout the day she loves nursing just as much as when she was smaller.
I remember freaking out about how much I would pump but I would take it day by day and set small goals which seemed easier to achieve and not so overwhelming and ultimately I reach my main goal which was to breastfeed an entire year.
Woww. That's amazing!! Well done you!!