invest in a bottle warmer, plug it in next to your bed. When u go to bed, take the water in the bottle with you and the amount of formula u need in a formula dispenser. Then when she wakes, put it in the wamer, (the water) while u change her nappy or give her cuddles and add the formula fresh to the warmed water. I used to take the bottle to bed wit hot water in it, so by the time she wanted a bottle, it had cooled down just enough.