13 month old DS has never been a great sleeper, but since Christmas he's been pretty reliably sleeping through - with a top up feed at 10.30pm ish. Then about 10 days ago we dropped the bedtime feed (not before time!) and he slept through from 6.30/7pm to 6.30-7am for a whole 5 nights on the trot.
Then... middle of last week, he woke up at 3am ish and took ages to settle back to sleep. And now he's doing it every night. The last few nights we've been up from around 2.30-3.30 to 5am with him. We're all exhausted and can't work out what's going wrong.
There doesn't seem to be anything wrong - we've tried ignoring him and he gets hysterical. Tried just going in and shhing in the dark. Ditto. Tried feeding him - will eat, but then not settle any better. Tried a 'full service and MOT' (lights on, nappy change, teething stuff, Calpol and a feed, recreate bedtime routine). Perfectly happy sat on lap/snuggling etc, but then full on hysterics when put in cot. We've even tried bringing him in to bed with us - he's happy, but doesn't sleep - wriggles. Last night he woke me up by poking me in the eye... so that's not an option.
Short of applying gaffer tape to his mouth, what can we try? Is this another bloody 'phase'? Please god don't tell me there's another bastarding sleep regression?