hi. My granddaughter is 15 months old and over the past 3 nights has woken up screaming my daughter would go in and comfort her but then she wouldnt go bacvk to sleep when she eventually did shed would wake as soon as she was put down in her cot. Tonight my daughter gave her her bottle which she left 2oz of and as soon as she put her down she screamed. she did go down about 30 mins later. I think she is still asleep at the moment. Any advice?