My DD did exactly the same thing and I was exhausted as I would be then getting up at 6am for work. I tried different things without much luck and then would sometimes give her a bottle and she would sleep better. She would only have a few slurps and go off to sleep. I weaned her 5weeks ago and she just turned 2 yesterday and thankfully sleeps in her own big bed most nights or she will walk in and climb in bed with us other nights. Its not usually till 4plus am and then goes straight back to sleep with me and DH till 8am. She sleeps great now despite the booby snacking all night when she was around 12-18months old. You could try some expressed breast milk if you don't want her having other milk or even warm water or else can your DH attend to her? I am sure its a stage she will grow out of even if you don't find the best solution for the now. GL