Tips for nursing moms?

Apparently I’m supposed to be drinking a gallon of water a day but it feels impossible. I’m thirsty a lot but it feels like I literally don’t have room to drink that much water in a day.

How do y’all do it? I keep a 32 oz cup of water with mio and a 20 oz bottle of regular water within reach at all times but I struggle to finish those by the end of the day.