Thanks everyone for your replies! hmmmm
DD is still sleeping terribly but recently we've moved

and her molars are almost through. She just won't go to bed at 7pm anymore and we've tried to keep her up half our later and she is tired but I sit by the bed with her until she is asleep, she would much rather me cuddle her to sleep as she kicks up a fuss. I've ordered a book online so waiting for that to arrive and then will try a routine again (seemed to work months ago but going overseas with
DD recently seemed to disrupt the routine). I have another one on the way too, early days yet but I can't bear the thought of going through this every night with
DD when I have a newborn

let's hope
DD gets better soon!