When to worry?

My daughter is 2 weeks + 3 days old and sleeps what feels like constantly, which I know is normal the first few weeks of life, but when she is actually awake, she just looks so lethargic and pitiful. I’ve brought it up with her pediatrician multiple times and she says as long as she is waking up to feed every 3-4 hours not to worry (she is).

I don’t remember either of my older 2 ever looking so pitiful.. but it has been a couple of years. Anyone else having this issue?