DS is 4 months and will happily take a bottle of expressed milk but to keep making sure he takes one I try and express about once a week with the hope he won't start to reject a bottle. I hardly ever need to give him one but I like the fall back of knowing I can.
I find it a faff to express and wondered if I could try cooled boiled water in a bottle now and again to just keep up with the bottle, rather than expressing when I don't need to. Would it hurt?