I'd say just drink as much lemonade as you want. Your body is able to tell you what to do. Trust yourself! If you don't want to brush your teeth all the time, try swishing some room-temperature water around in your mouth right after you drink the lemonade. The water is able to remove the acid from your teeth and gums. I wouldn't recommend brushing your teeth with toothpaste all day long, but certainly there's nothing wrong with frequent brushing with water. Hope this helps! God bless and fast on!!