Samantha I wouldn't write that in stone if I were you. When your ankles start to swell like baseballs and your .Dr tells you to drink water, you'd better drink water.
They aren't making it up that you need to drink a gallon a day. It really isn't hard to do especially when you're 35 weeks. I find myself chugging water alll day long and I still have slight swelling.....
Water is your best friend during pregnancy. Have it be in the begining or in the end!
Sarah