Ok, then, this is what I would do if I were in your shoes.
I would keep the dreamfeed (df) for now. But, as for the middle of the night feed (motn), I would reduce his bottle by 1 ounce every 2 nights until there is nothing left to give. Each night that you reduce the bottle, add that ounce back into a daytime bottle. I would offer a bottle first thing in the morning. Hopefully, if he hasn't had a big bottle at 5 am, then he will be hungry for it. Whatever he takes from the first of the day bottle, decrease that amount from the bottle you would offer him at naptime. Try to keep him awake, even if he's drowsy but awake, before you put him in his crib so that you can sleep train him if necessary.
Does this make sense? It will probably take 1-2 weeks to get this sorted b/c you want to do it slowly and give him time to adjust.
As you are doing this, you will want to incorporate pu/pd to get him to sleep without feeding to sleep, and/or to go back to sleep when he wakes in the night. If wake to sleep (w2s) is working, continue with that a bit longer. If it doesn't work, do pu/pd. There is a huge section on pu/pd in The BW Solves All Your Problems as well as great tips on the Sleep Forums.
I personally think that if a 7 mo old has a 10-10:30 df, then they can go to 6/7 am before needing a feed again. However, I appreciate that every baby is different and has different circumstances. You are his mother, and if you think he needs a motn feed, then you should give it to him. You just might consider, though, that if he's waking like clockwork, then it's probably out of habit. If he were to wake at random times, then it could true hunger, especially at the time when growth spurts generally occur (6,9,12 mos).
However, I would also advise to consider dropping the df within this next month so that it, too, doesn't become a hard habit to break. It will be helpful that he's beginning to have solids. To cut out the df, you will also be adding those ounces back into his daytime bottles at first. Then, you will see that as he begins to eat more solid food, his bottle amounts should decrease (9-12 mos).
I may have gone past the point of help you needed, but I had so many thoughts I wanted to get down. Do you think this will help?