is it normal for my 1 week old to be drinking 3oz?

@lizyetter_1991, @katarama thanks I guess it depends on the baby

my daughter ate 3oz from about 10days old to a month old and now shes on 4oz, may have to go up to 5 here soon.

Could be a growth spurt already. My daughter will be 3 weeks old tomorrow and she is up to 3-4 oz for her feedings.