13 month old DS has never been a great sleeper but we had a few months over the summer of mostly sleeping through. It's all gone a bit wrong the last few months, with the last few weeks being particularly terrible! He self settles for bedtime and naps, but if he wakes we are in trouble! He wakes, cries and stands. He won't be comforted easily by a cuddle/water like he used to, instead writhes and fidgets and cries in my arms, when he eventually calms I put him back in his cot where he rolls over and goes quiet for 5/10 mins and then it starts again...usually for 2/3 hours. If I just go and lie him back down each time he stands it doesn't seem to speed things up. Not really sure how to deal with it to be honest! He is currently sitting and crying hard and I hate it. Can't work out if something is wrong or not! Any ideas or tips?! Need some fresh ideas!