Won't take breast anymore

Sounds like a nursing strike: https://laleche.org.uk/nursing-strikes/

Maybe try a shield? My baby refused the boob for a while and I had to use a shield for a bit. It was a faff but we got through it and she's back on the breast now.

Have you started taking a supplement recently?! They can dislike the taste of the milk if you are eating something such as fish oil capsules for example. (If the breast milk was expressed whilst not taking a supplement she may still take that milk). Or is the volume of the milk too much for them. My little one refused me a bit back in one side that had higher volume and he kept choking a bit. Or it could be that he just prefers the bottle because she doesn’t have to work for it as much like you do on the breast. The milk flows easier from a bottle and they don’t have to do as much. Or is it positional? On the breast is she in a more laid down position and bottle more sat up so taking it easier from a bottle as helping the digestion with her position?! Hopefully some things to think about. Xx