Nat - yay for the waistline! I had to do the jeans dance but I got them on haha

Well last night wasn't so bad, he fed and changed at 1am then slept till 4am I fed him in the dark this time and he brought up the wind himself and settled back to sleep straight away. He woke again at 6am so I fed and changed him again without turning the light on as there was enough light in the room for me to see, again he settled quickly then he slept until 8.30. So i think keeping the light off has made a difference coz he's not getting that stimulation and confusing night and day time.
And Nat - I have been doing that with the dummy too. He settles better with a full belly and a dummy but I didn't realise that about not realising they're full.
I had to top up DS2 with formula, worked great with him. I was able to do both with him till 4 months, then it just got too hard my milk started running out coz I was so exhausted running around after an 18 month old and nursing a baby. So as long as it's working it's worth doing.
Everything is just trial and error, see what works for each baby. Whatever we must do for bit of shut eye!