thanks everyone just thought you'd all like an update. I cut down my caffeine two small glasses of coke zero a day, right after Quinn feeds and while he is still waking 3 times for a feed he is settling right back down to sleep and not being so fidgety in his sleep. We are both getting 50% more sleep now!
Also I stopped offering the breast every time he moved through the day and now I give him one good feed at 7am, 10am and another good feed at 2pm, then a good feed at 7pm plus the ones overnight. He's eating his solids well as usual.
He's not playing the way he was because he's too hungry to bother.

So I have had success with cutting the caffeine! what a vicious cycle that was, drink caffeine because I'm tired, get no sleep because of the caffeine!!