If your midwife or doctor has told you to wake for feeds due to concerns about weight gain, yes. If she's putting on weight fine and you've not been told to, I probably wouldn't be too bothered as that's a good amount. I had to wake mine for feeds for the first month every 3 hours because she was losing so much weight, but she definitely wasn't taking more than 10-20 ml per feed for the first two weeks or so (mix of expressed milk and formula). Even at 6 weeks when we switched to formula she was having at most 60 ml every 4 hours. Their stomachs are really small to start so I wouldn't worry about the amount as long as she isn't losing too much weight.