My 20m old frequently (about half the time) coughs after drinking water from a sippy cup. I have tried different style tops and having the water cold vs room temp. Doesn't make a difference. He also has been using a sippy regularly since at least 12m, so it's not like he's just learning. Anyone else's kid do this? He has no trouble with foods of any sort.
He hardly ever (almost never coughs) when I help him drink from a regular cup, probably because I am controlling the flow with smaller sips, one sip at a time.
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