Thanks Kara, I started today. I wiped the 11 am bottle out completely and brought his 3pm one forwards to 2pm. He drank 6oz of his 2pm one and not quite 7oz of his bedtime bottle so hopefully it's done the trick and that it's not because he's been hungry today anyway and mummy's starved him of his 11am aswell!
Hopefully he won't wake hungry, sure he won't else he would have had all of his BT bottle. I did give him his favourite foods today though so he would eat a few more solids as he still left 3 1/2 of his morning bottle.
Yes daycare complete his book each day saying what he's been up to, when he's slept and what he's eaten and drank and in what quantities so I should be able to still keep a beady eye on him!