Does it sound like I need to be concerned?

I breast feed and the nurse asked how often my son nurses

I told her pretty often

He usually doesn’t go more than 2 hours without nursing unless it’s night time

And she told me that means he’s not eating enough and I should supplement with a bottle

Problem being my son won’t take a bottle

But also

When she weighed him he had gained 10oz since our last visit which was roughly 10/11 days ago

Making him 11 lbs and 10oz at almost 5 weeks

My doctor said his weight gain is good and he’s in the 87th%tile