Is this a good weight gain?

[Alicia]

I got Willow last Friday and she was just under 6 weeks. I weighed her then and she was 263g, and I've weighed her today and she's 266g. I know it's good that she's gaining weight but I was expecting her to have gained more. I don't really see her eat but there are lots of food bowls and she always has access to food and hay.