My 10 day old sleeps way too much!! How can I wake her up?

My 10day old daughter slept from 2pm-7:30pm yesterday. Only woke up once to eat around 4:30 and she only drank 2oz...and she fell asleep again before finishing it...she sleeps very hard too!! We live like 20 steps away from a train track and the train doesn't wake her up. I tried changing her diaper...wiping Her down with a cold wash cloth...I tried the bugger sucker...(she REALLYdoesnt like the buggar sucker)and she still didn't wake up. The only thing that woke her up was putting her on the floor....and I tried feeding her and she fell asleep AGAIN!! Oh but she kept me up ALL night.e finally fell asleep. At 5am...and she woke up at 9 am to eat but now she is asleep again... And WONT wake up.I'm so tired and frustrated!!! What should I do? I try waking her up every three hours to eat but she falls asleep after half an oz.....what should I do?? :'(