How much should she sleep?

[Heaven]

How much should a newborn sleep during the day? When we first came home for the first couple of weeks DD pretty much slept all the time. Then she started having a couple of awake times during the day where she wouldn't sleep between a couple of feeds. But she was still sleeping alot. Now she's only 3 wks old but she's hardly sleeping during the day from 9am until about 7pm. She only has a couple of hrs sleep! Everytime I think she's asleep and put her down she wakes up after 10mins!! Don't know how I'm ever supposed to do anything, lol.

Maybe it's just that she wants to be carried though because she's now in the hug-a-bub sound asleep I almost blew it a minute ago though by accidentally sneezing on her head she screamed but then thankfully went straight back to sleep.