My Newborn Doesn't Sleep For Long

My LO is turning 5 wks and she doesn't seem to nap for long stretches, at times only 30mins or less and she will wake up cranky. I have tried swaddling, white noise etc but still not much improvement. She ends up drinking every hr or so when she wakes up abt 30-50ml sometimes. She makes alot of grunting noises and keep stretching in her sleep, sometimes throughout the whole night. Is this normal?how to get her to sleep for long? So stressed out by this newborn phase ?