He's been crying since 2am. No temp, he's had Calpol, doesn't seem to be teething, he's in my bed with me. He's been crying for 4 hours, drifts back off to sleep, then wakes up crying again. He's now been crying for a solid hour. I mean screaming. What can I do? I usually go out for a walk but obviously can't right now as we are in isolation (he had a mild temp 10 days ago). I'm going mad.