Just wanted to mention that antibiotics can make kids sleepy. My son is on them at the moment for something else & he sleeps a lot during the day but seems very uncomfortable at night. He's teething right now & has had fluid in his ears since birth which puts extra pressure on the ears when teething. He's been off solid food for 3 weeks now, just wants mush & bottles. He's usually OK during the day but at night he plays up I'm presuming from pain. Perhaps lying down in the cot or bed might put extra pressure on the eardrums.... I'm not really sure but I do wonder about it.

I hope your son improves soon. It's so hard watching them in pain & being able to do very little about it.