My DS (21 months) and a Gina baby (from 2 days!)and has slept 7-7 since 10 weeks has suddenly and unexplicably started waking in the night with a sudden scream/cry i.e. he's fast asleep and then just suddenly wakes up crying. He started doing this at 10pmish, then moved to 12ish, now at 2ish - it's normally only once, but it's sometimes 3 times in quick succession (over a 10 min period). We don't need to do anything else but go in and say something like 'go to sleep' and he just drops off again immediately. We've tried cutting down on the lunchtime sleep (taking it right down (gradually) to 1hr 40mins) but it didn't make any difference. Any thoughts...? Thanks.