When should my baby sleep through the night without a feeding?

I think it partially depends on the baby too. All my 3 babies were able to sleep through the night from the day they were born and #1 and #2 last all the way into their toddler years as I also do cluster-feeding from 6pm onwards. Cluster-feeding is feeding in close cluster of very short interval. For me, I do cluster-feed from 6pm to 10pm with 1hr interval betwen feeds regardless of demand. I find this method works well for my kids. For my #3, I was unable to do so due to need to care for the 2 older kids so she stopped sleeping through the night at about 3rd month. However the problem goes away when she starts on solids at 6th month as she gets dinner as well as her usual milkfeed.