6oz on in a week. Woo hoo. He's also seemed loads more settled since topping him up with a bottle of EBM. Only managing to get 50-60 ml in a day at the moment but its better than nothing.
Switch nursing seems to have made the most difference - so thanks to those who suggested that.
I've also been dairy free for a few days and the screaming episodes have definately lessened but I realise it will take up to 2weeks to be sure that the CMP is responsible for the reflux.
Have an appt with GP tomorrow to review the reflux meds.
Seems little elf is thriving!