I wouldn't say she is having too much milk, but she is having more milk than some babies her age so it could be that her milk intake isn't helping her solids intake IYSWIM!
Both my refluxers were bottle fed, and both were on 3 bottles by 11 months which seems to be the "norm" for formula fed babies, breastfed babies do keep more feeds for longer, I think 4 at this age is about right (but check with the breastfeeding board on that one!). It may be worth thinking about weaning the nightfeed, at her age she should be able to take enough calories in the day but that's up to you really.
I will move you over to the feeding solid food board though!
Laura