I stopped cluster feeding at around 9 weeks, but I didn't just stop. If we had a day where she woke from her catnap pretty early, I'd cluster, but if it was later then i'd just wait awhile to feed her. For example, if her catnap was over at 4:30, I'd feed her when she woke, then again before bed between 6 and 6:30. But if her catnap was over at 5:30, I wouldn't feed her when she woke, I'd try to wait until 6:30. We were dealing with 45 min naps at the time, so it was nice to have the option. Her nightwakings were not affected by the cluster feed either way. To me it just made getting through the evenings easier! Now at 12 weeks we don't cluster at all- unless a growth spurt!