At 6 months our girls were still having a feed overnight. I think that's completely normal. They slowly moved the time that they needed it until it got to around 5am and that's when we stopped it as they weren't resettling. I'd say an overnight feed at 6 months is fine. We could tell when it changed from needed to just waking out of habit because they didn't drink much and it was obvious they were fine waiting until 7am. We started solids at 6 months. Is your bub perhaps starting to look for solids during the day? Ours were much better in that cranky afternoon time once we started solids.
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