I'm having sleeping problems with my 9 month old, and I don't know what to do.. for the last month or so, he wakes up during the night (can be from 12.30am to 3-4am) crying, and crawling around in his cot, and won't go back to sleep unless we take him into bed with us..

I've tried the patting and trying to get him back to sleep, but he's not interested.. just cries and cries.. so we'll get him back to sleep eventually and the moment you put him back in his cot, he's awake and crying again.. it's bad enough he goes to bed late (from 10pm onwards - have tried soooo many times to get him to bed earlier, and he's not interested - will chuck a tantrum), but know we have this problem as well, so he ends up not getting enough sleep during the night...

I don't know what to do.. any suggestions?