We have a 4 month old boy and are looking to cut out his 11:00 (evening) feed. What is the best way to do this?

My son is 4 months old and feeds at 7am, 11am, 3pm, 7pm and 11pm. He falls asleep without fail straight after his 7pm feed and is always in his cot by 8pm. So he already has his bedtime. He wake between 4:30am and 5:30 am but not because he is hungry, it just seems to be his morning time. We are currently waking him at 11pm to feed him and he very sleepy during the feed but always finishes his bottle. We are looking at changing the 11:00 feed and wondered what the best way to do it is. I have been told by a friend that they just cut the 11:00 feed out at eventually their baby went from 7-7 without food. My only concern would be is that too long without food and also would that be too much of a change at once for him. The other option I thought of doing was bring the 11pm feed forward to maybe 10:30 for a couple of weeks then maybe 10:00 until we end up cutting out that feed. I'm finding it very confusing and not sure what will be best to do for all of us. The health visit wasn't any help. Any ideas would be greatly appreciated. Thanks