breastfeeding bigger babies

Cassidy
Did anyone breastfeed a bigger baby? 
My daughter was 9 lbs 15, I just feel she feeds all the time and never seems satisfied. My milk seems to have come in fine and she's latching fine too. 
I've been giving her a one or two ounce top up of formula at night and through the night out of total exhaustion. She would literally be up feeding all night without it. 
Any tips please. 
I've used a manual pump and can get a few ounces but it's just so labour intensive 

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