7 week old is constantly hungry, help!

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My daughter will be 2 months on the 18th. For the past 2 weeks she wants to keep eating. I had her on a schedule of 3-4oz every 3-4 hours 3 weeks ago and most of the time she would go for 4 hours. Now she drinks 5-6oz and wants to eat 2 hours later. I will try to hold her off, but she continues to cry until she gets fed and when I do feed her she tries to inhale it. She won't sleep at night anymore. She will wake up every 2 hours and wants to eat. I'm waiting on a call back from her pediatrician, but I would like anyone who has had experience with this or any advice. She is not satisfied and barely gets any sleep.