My son improved at around 14 months. He went from waking anywhere between every 45 mins to 2 hours, to suddenly sleeping through 14 hours as well as having a nap. Around the same time there were changes.....
-I went back to work and OH became a SAHD, so he was going to Alex at nighttime (I just did on weekends).
- I stopped breastfeeding. Although it was only a little comfort feeding at night by this point really.
- he started walking, so I guess he was tiring himself out more.
We realised he wasn't happy with his bedtime routine. I'd take him in and leave a night light on and cuddle him to sleep and read him a story or whatever.
He's now 2 years and 2 months and sleep has got a bit worse, in that he's fighting going to bed, and started getting up earlier at 6/7 instead of his usual 9.30, but my nan is to blame for that as when she stayed in jan, she woke him up early to play every day grrrrr
His nap has also dropped to 45 - 60 mins, but I guess it could be his age and needing less sleep or it could be because he is scared of missing something as he wants to play with his toys and new brother. Who knows!
However we figured out we needed to keep it simple and he needs silence and a dark room (we bought a gro-blind) and he likes to go to bed alone or he mucks about with you. Now we go in and tuck him in with Mickey Mouse, kiss him and say good night and he says 'night mummy, love you. Out - close the door!' And we leave and he's usually asleep by the time we've got to the bottom of the stairs lol!! I know where I'm not wanted ha ha!!! He kicks me out every night!!! Lol
We make sure we stick to his 7pm bedtime, but now he's in nursery full time he often asks to go to bed earlier at 6/6.30.
Hope things get better for you too very soon!