Cameron (18wks) moved into his own room a few hours ago! It's now 4.30 am and I'm awake, which says a lot! He's fast asleep, but I can't settle, I miss him

Bloody ridiculous as he's only next door ..
Anyway, he'd been waking really early and we weren't sure if it's a sign he can no longer sleep through the night because he's hungry, or if it's because the sunrise coming through our rubbish curtains wakes him up.
I also wanted to get him into his own room while he still fits into his crib, rather than dumping him in a strange room in a strange bed. Thought a familiar bed would help him settle.
So yesterday we finally got around to sorting out his room so that the crib would fit in it, and away we went. As it happened, his routine was a bit upset, so bedtime was later than usual, which I think has helped as he was really tired.
He has stirred a couple of times, but that's nothing unusual. I've been in to give a bit of reassurance and he's gone off again.
So far, so good .....