Thank you all for your advice!
In hindsight going from on demand to 4 hourly was a big jump, but he seems to be happy with it. Doesn't seem to be going hungry - even after a 4 hour stretch.
He is a windy baby, but even after a few big belches I can't get him back on.
In general, we are 8 days into the 4 hourly EASY routine and it is going REALLY well
He no longer cries during the day, which suggests to me that he isn't going hungry (along with the wet and dirty nappies) .
I wake him at 0700 and feed him straight away. Despite being used to 4 hourly feeds now, he still pulls away after only about 8 mins and arches his back to look around him. Even in a dark quiet room.
After persevering for about 30 mins we progress to activity.
He then goes down happily for a sleep at 0900 for about an hour, I try to get him to go for longer if he will.
I then feed him again at 1100, breast and then rice with expressed milk - he eats a lot ! probably about 3-4oz worth.
He then sleeps for about 1 hour at 1300, I try to get him back down and sometimes he will go for another 40 minutes or so. I then breastfeed him.
He then naps in the afternoon for about 45 mins.
I then breastfeed him at 1850 and give him rice at 1900.
He takes a good 20 min dreamfeed, breast only - although have tried to introduce bottle to see him through - wouldn't take it, just chews teat.
He goes to sleep at about 1930 and only wakes once usually between 0300 - 0400 when he happily guzzles for 20 mins! and doesn't wake until 0700.
I am expressing one hour after feeds in order to keep up my supply whilst his appetite is suppressed. I am using this to make rice for the 1100 and the 1900 feeds.
So in summary he has gone from feeding, crying and not sleeping 24/7 to sleeping when he should and being really happy.
I am delighted
my only concern is the quantity of milk he is taking.
I have tried topping him up with the bottle of expressed milk but he just wont take it. He just can't be hungry - could be teething or just ready for weening ? alternatively, this could just be a phase.
Regards