I've been giving my 17 mo a shot glass full of raw kefir for the past 10 day or so. He's sounding really congested when sleeping for the last 2-3 days, but doesn't have a runny nose. He's been breast-fed from birth and the only dairy he's consumed in the past is some yoghurt (just a few times) and cream, the cheese he eats is made from sheep's milk. I cook his food in ghee. I'm wondering if the kefir could be causing the mucous. I keep reading about dairy causing mucous. Would someone enlighten me on this topic? Should I stop the kefir to see if the congestion goes away? I'm kind of scared to stop temporarily because then it would be hard to get him used to the taste again, considering how beneficial to health kefir is said to be. TIA for your responses.