I don't know what to say

Recently my parents always doesn't let my baby finish his milk. #moneygonedownthedrain The thing is, my baby has a habit of shaking his head during feeding time. (Actually why ah?) And my parents take that as a cue that my baby doesn't want to drink. And when they feed him, he cries. I observed that even after 15 minutes of feeding, the level of milk doesn't drop. I told them to make him finish his milk otherwise he goes hungry, or let me feed him because my baby finishes his milk when I feed. But they insist in doing the feeding themselves. They will carry my baby and walk around the room to try to feed him but it just doesn't work. When I give advice and tell them what my son prefers, my mum will snap at me and say I know nothing. #firstbaby #1stimemom #sianalready #mumdoesntlistentome