DS2 is 16mo and has never been a great sleeper. We are night-weaning at the moment, and he seems to be fine with the fact that he's not getting milk, but he's having trouble getting back to sleep. He's happy to be lying down in his cot, as long as one of us is holding his hand, but doesn't seem to be dropping off - last night it took 1.5 hours before he was finally properly back to sleep (though there was a point around the 1 hour mark where we thought he'd gone, and DH left the room, only for DS2 to wake up again a few minutes later).
Is this normal? How can we help him fall asleep faster?