Nursing strike!

Jessica

My 4.5 mo-old just stopped nursing yesterday. He won’t even take breast milk in the bottle! He’ll only drink formula. I tried defrosting breastmilk from a month ago, just in case it was something I ate recently, but no. Formula only. He wouldn’t even breastfeed for his middle-of-the-night feeding. What could be going on? Should I stop breastfeeding? How do I stop, since my body is still making so much milk?