First-time dog owner with 8-week-old golden retriever – not food-driven? Is this normal?

Hey everyone!
This is my first time having a dog, and I’ve had my golden retriever puppy for 5 days now. She’s 8 weeks old, and I’ve noticed that she’s not really food-driven. I’m currently feeding her dry food three times a day (morning, midday, and afternoon), but she doesn’t seem to eat much. She’ll eat about half of her meal and then leave the rest for later.

Everything else seems fine—she plays, takes lots of naps, and overall seems pretty happy and healthy. But the feeding has me a little worried. Should I be concerned about her not finishing her food? Should I think about switching her food, or is this normal behavior for a puppy? Any advice would be really appreciated. Thanks in advance!

Edit: Thank you all for your help. We took her to the vet, and they told us to deworm her again because the breeder’s deworming didn’t seem to work. There were signs in her fur and poop.

For 1-3 days, she had a lot of loose poop and seemed a bit down, but now she’s eating better. We’ve been mixing in a bit of wet food, and she’s got a ton of energy now!!!