OK so his usual first wake up just happened so I thought I would test... hungry or habit.
It would seem its a bit of a habit waking by my brief deduction. He isn't a dummy taker, but took the dummy (didn't stay in for long) and was perfectly chilled out and smiling, happy. I held him for a while, holding the dummy in. I left him too, went out of the room as he was calm, but he still grumbled so went back in after a minute. I sat there for a while with the light on dim just looking at him (which was lovely to be fair) and he was happy as, laughed and stuff when the dummy fell out, although still a little grouchy.
Gave him a small snack of 90ml, which is much less than I would normally offer. He would have kept going had I had more, but I thought lets leave it there and see what happens.
Will do some more reading in the morning about how to get rid of a habit feed at this age - I had to do this with Miss 2 when she was about 5 months old, but she was old enough for PU/PD and that worked well. I think he is too young for PU/PD yet, the books go on and on about PU/PD being most effective from 4 months. I have to say I hate me some sshhh pat like nothing else, but I might have to bite the bullet and do it. Unless anyone has some alternatives?

It isn't the standing there and doing it, I feel like a dork and that I'm doing it wrong... so maybe I am?!
Suspect this started as a growth spurt feed but now is something he feels he needs. I would usually be happy to oblige with a newborn and keep feeding but at nearly 11 weeks, huge baby and takes more formula than is recommended, I think maybe it is time to be a little bit hard on this little habit feed and see what happens.