Enough to get pee
The real question is: how do I know my child is well hydrated? You should keep giving fluid until you see a good number of wet diapers, moist mouth, tears, and bright shiny eyes.
Your child should be more awake, alert, active. If they are lethargic, not drooling
, not making tears with crying
, or having significantly decreased urine
, then you need to give more fluids or call your doctor immediately.