We are right there beside him (co-sleeping) and sooth him, but he keeps it up, I guess until he is fully awake. We're mystified. He only occasionally does this in the middle of the night, 90% of the time it's in the morning around 6:30 a.m. He self-weaned at 14 months and other than a diaper change is pretty much a full-night sleeper.
Anyone else experienced this? Any tips? Thanks!