Our ped said that once he hits 3 months, or 12 lbs, he no longer "needs" to be fed during the night. That is, he can get through the night without feeding. She suggested comforting/ crying out and seeing if that would help wean the night feeds.
Our son had colic/ gas/ indigestion (or who knows what for sure), and was possibly even being fed too often at first. My MIL had us feeding him hourly (every time he whimpered it seemed). Since he was already inconcolable, we started sleep training (the Dr. Ferber method), we figured, we had nothing to loose and everything to gain.
At first he slept from 10-6:30 with one wake up (around 4). Then he slept through from 10-6:30/7. recently, he's been going to bed earlier, and is down between 8:30-and 9, and wakes up between 6:30 & 7. I went back to work when he was 3.5 months. He's now 6 months. He gave up the 4 am wake up within my first week back.
Some people are happy to carry on getting up in the middle of the night. Sounds like you aren't one of that camp.
If you don't want to go whole hog and do the sleep training, you can try 1. moving baby to his own room. If you don't hear every gurgle, he'll have a chance to self soothe, and might surprise you by going back to sleep. 2. you can ditch the monitor (same idea as above). 3. you can try to comfort and help to sleep without feeding.
For what its worth, we were also part of the early feeding camp. We started cereal at 4 months, and are now onto 2nd fruits and veg and meats.
Finally, nothing lasts forever. You will be sleeping soon enough.