Man, how long has this been going on? Do you think there is teething involved here... Some babies find it difficult to suckle when they are about to have a tooth break through.
Here is a write up about nursing strike.
WE used pumped milk as a drink along solid foods in the place of water - this was mainly to ease some constipation - but that could work to ensure she has some milk to drink. We also used a mesh feeder for fruits, moms in another breastfeeding support group used pumped and frozen breastmilk in the meshfeeder or even
momsicles when their LOs went through a nursing strike.