How much formula does a 3week plus baby aloud be drinking? Is 150ml too much?

From what I've read, the recommended amount and frequency for newborn is 2-3oz every 3 hours. So that is about 60ml to 85ml or so. You can also use your baby's weight as an estimation. Multiply your baby’s weight (in pounds) by two and divide it into the number of feedings in a day. For more information, you can take a look at this article: http://sg.theasianparent.com/gauging-how-much-formula-your-baby-needs/