They are 4.5 and 19 months. It's day 3 and they keep setting each other off and it's taking over an hour to get them both to sleep. We've tried settling dc2 first, putting both down together, and putting dc1 in our bed then moving her later (she woke up at midnight disoriented). Any tips? Or should we just resign ourselves to this for the rest of the hols? They're both getting incr grumpy during the day as a result...