Breast milk to Formula

Rebecca

Advice please! My son has been on BM since he was born 9 months ago. My body isn't able to keep up any more so we are trying to switch to formula. He WILL NOT take it. He drinks for a couple seconds then pushes it away. We've tried mixing it with BM and he does the same thing. I don't know what to do.

*Forgot to put it when first posted. I exclusively pump so I know exactly how much he eats vs how much I'm producing*