Is he taking a full feed at each of those wakings? If so, I'm sorry, hun, but he needs the milk, and he's going to keep waking for it. He's at a growth spurt age now, too, so that could be casuing him to wake more to feed.
If he's not taking a full, feed, try cutting out one of those night feeds and use pat/shush or PU/PD (not sure which is appropriate here; help me out everyone.. I didn't sleep-train until dd was 9 months old :shock: ). Then you can cut out one of the others if he still is not taking a full feed.
Is it hard to get him back down after the dream feed? If so, I can see why you'd skip it. But if he goes back to sleep easily, why not do it anyway; it might buy you a little more sleep time.
Sorry I don't have more help. Just keep in mind that it will get better. I promise.