Cough

L

My lo who is 18 months has been coughing most of the day. Like a wet cough. And he would cough while he took his nap today. What can I do for him? I had his humidifier on when he took his nap and will when he goes to bed. He’s been sick once which was a year ago with an ear infection. And I’m a ftm so not sure what all to do?