My 9 month old bub has gone from getting himself to sleep quite easily to screaming down the house the very moment he lays down in his cot. (he used to do that at 5 months when he went from co-sleep to cot), but I can't work out what it is now. He stands in his cot and holds on to the sides and won't be put down. He didn't sleep well until 6 months and I ended up giving him a dummy at 7 months which helped him more, but now it doesn't help at all. Also when we're out in the stroller as soon as he's tired he screams ..really screams..it's a mare, he didn't used to! I think the screaming has started again since he has been able to pull himself up in the cot...but what now...? I am thinking of letting him cry it out - any advice?