How much milk for a 9 month old?

[SquigglePigs]

My DD is 9 months old and breastfed alongside now weaning. I've had a couple of people make comments recently that imply I'm still BF too much. She's my first and other babies I've been round haven't been exclusively BF so I don't have anything to compare her to.

How much is "normal" at this age? I'm also conscious that I'm going back to work in a couple of months so by then she's going to have to accept minimal/no milk during the days when I'm working (she won't take a bottle!).