Should I increase feedings from 3oz to 4oz?

My baby girl is 15 weeks today and over the past week or so I’ve noticed that she is getting hungry every 2 hours and she gets 3oz of pumped breastmilk a feeding as I am an exclusive pumper. Should I increase to 4oz a feeding? Will this stretch out the time between her feedings to 3-4 hours instead of 2-3 hours? She currently eats about 7-8 times a day.

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