Hi Lori,
When you feed your lo during the day, are you feeding him every three hours i.e. if he is asleep are you waking him up to feed him? If not, I would wake him when his feeds are due to ensure that he takes most of his calories in the day time as opposed to night time.
I would also suggest cluster feeding, this helps your lo tank up before bed time. I would feed at 5pm - put him down for a cat nap of about 45 minutes, wake, feed again at 6:00pm, bath as your A time and feed again after the bath around 7:00pm, and aim for him to be in bed by no later that 7:30. This way your lo has tanked up before bedtime and should sleep through until the dreamfeed. I would also try moving the dreamfeed as close to 10:00 as possible.
At this age, you can still expect night wakings, this is very common.
As for formula and how much your lo should be taking, the guideline is 2.5oz - 2.7oz per lbs of body weight. See the link below. Please note that this is only a guideline, and some babies take more and some babies take less.
https://babywhispererforums.com/index.php?topic=67933.msg516813#msg516813Hope this info helps.
Let us know how you get on.