He has a nap in the morning, of various length (30 mins- 1 hour) then he has a long nap in the afternoon (1.30-2hrs) and then goes to bed as he has always done around 8-8.30 pm. He sleeps solidly till about 11pm when he cries a bit and we call it "a soother emergency", you go up, give him the soother and that's all that's needed. Till a month ago, you wouldn't hear him till 7am in the morning, when he would wake up happily chatting to himself and didn't need attention for about another hour. It was great going. Now he cries for a bit before sleeping, nothing major, no drama, doesn't really need anything a part from the soother and he's asleep within 10-15 minutes from going to bed. And then the occasional waking up starts. First it was because he may have rotated in the bed, getting stuck sideways. Then it was because he may have rolled over onto his belly and couldn't get back on his back. But now it's just waking up crying (not an upset cry, just a nagging one) you go in, he's not stuck anywhere, give him his soother, and back out to bed. After a couple of hours it happens again. And again. And again. Maybe he's warm, maybe he's cold, maybe he's thirsty/hungry, maybe he has a sore tummy, maybe he's teething...I have no idea.
Any tips or comforting thoughts? A part from this he's the usual sweet baby, eats happily (chicken too!) and plays. I'm running out of things to try... I had read somewhere that as they grow to this age, the World during the day is so interesting that they don't want to give it up at night, can this be it?