Oh hun - always trust your momma-instinct. You know your baby best and if you feel he needs to be fed, do not let any book tell you otherwise!
Many LO's need a night feed until they are well established on solids around 9-10 months of age. And even a baby who is night weaned early by their own choice (like mine was at 4.5 months) - there will be times that they need that NF again. Teething was that case for us... it hurt to drink much at one time, so she would wake at night to make up for it. Illness can lead to the same thing - too hard to breathe and swallow all at once so they start to wake at night again.
My DD was doing about 5 ozs per feed at that age as well - totally normal. Do you offer a full feed at NWing times too? If not, go ahead and do it - it may lessen the chance of multiple night feeds for you.
Remember that "sleeping through the night" by definition is 5 hrs uninterrupted - far from what any mother would consider sleeping through
![Wink ;)](https://smiley.babywhispererforums.com/Smileys/classic/wink.gif)