My DS is 15 months (13 corrected) and his sleep has always been very up and down but we had a period of a few weeks up until around a month ago where he was almost sleeping through from 7:30-6/6:30 with maybe one quick resettle in there somewhere or he'd wake, have a grumble and settle himself without intervention after a few minutes.
We have a solid bedtime routine, room nice and dark and he can and does settle himself to sleep when put down at the start of the night.
But now... He's waking 3/4+ times a night starting between 9 and 11pm. Immediately standing up and properly crying and he just cannot resettle himself from there and isn't amenable to being resettled in the cot with some patting etc. so we have to pick him up which is fine. But even when we give it a good 10 or so minutes after he's dropped back off he will wake up within a few minutes of going back in the cot so each wake up turns into 3 or more smaller wake-ups before he finally stays put for a couple of hours and then we rinse and repeat.
Last night he was up at 9, 11:30, 1 and 3:30 before waking up for the day at 6:30. We've tried tinkering with layers/togs in case he's getting too hot or cold at certain points. We have also tried anbesol/Calpol right before bed in case it's his teeth bothering him but nothing has made any appreciable difference.
I should add, he's still on 2 naps a day and I don't think he's ready to drop to 1 yet as he's usually done in by 10am and I just don't see how we can push that out any further especially when he's not getting enough sleep at night just now. He usually naps for up to 2.5 hours total across both naps and we don't let him go past 3:30pm to try and keep him on track for bedtime. Normally naps at around 10 and then again at around 2, give or take 30 minutes.
Is there something I'm missing here?!