Baby panic

Having 'Baby Oliver' for the night...( see sirohadablip)......looking after babies used to be a doddle but Ollie is the first for nearly 6 years so we're a little out of practice........Had a SMA panic earlier.........How much does he have? What if it's too runny or too thick?.......How do you make it up?.....When do you wind him???? I rang Alice, his mum, a no nonsense African who tutted on the phone and said; ' 8 scoops, 9 water, shake, cool, feed......he let you know when he's hungry!'