my 5months LO has alot of phlegm. what can I do to reduce it? he's purely on ebm now.

Moisture in the air can make it easier for a baby to cough up the phlegm. You can consider using a humidifier in baby's room. This might ease the congestion. Depending on the other symptoms of the illness causing the phlegm, cold or warm mist may be more effective in unclogging phlegm. Great that you're breastfeeding, keeping baby hydrated is key to him getting well :)