Ahhh, yang ni common betul! Anak saya dulu sama jugak, the bottle teat feels different, so dia prefer that lah. Try introducing the dummy when dia relaxed and not too hungry, maybe during playtime or when dia settle dah, bukan bila dia desperate for feeding A few of my mum friends swear by putting a tiny bit of breastmilk on the dummy to make it more familiar, or try different shapes/brands because some babies just prefer certain ones (my friend's kid only accepted MAM haha). Jangan force it too much, some babies takde interest in dummy at all and that's okay too, as long as dia dapat comfort lain when you can't be there!