How much water is your 8 month old drinking?

Apparently an 8 month old is supposed to be drinking between 4-8oz of water a day, does your baby do this?

Mine is still figuring out the sippy cup lol but we try. My pediatrician said water at this age is optional as baby gets hydration from breastmilk

I just started to introduce it during lunch time and she loved it. Drinks about 4oz

My doctor told me she doesn't need it, so not to give it to her until 1 year old.