>>Do you think that if I’m drinking 3/4 to 1 gal. of water a day, I’m drinking enough to provide for my newborn?<<
This is just my personal opinion but it sounds fine to me. For years I’ve heard the recommendation to drink 8 cups of water a day, but I think a better recommendation is to drink half of your body weight in ounces. Meaning, if you’re 120 pounds, drink at least 60 oz. There are sixteen cups/ 128 oz in a gallon, so you sound like you’re doing great!
If a person lives where it’s hot, is very active, or is nursing, they’ll need to increase the amount they drink. And for the immediate days before a fast, it’s also a good idea to increase your daily water intake.