DD nursed constantly until she was 2 year old. Then she nursed mostly only during the day and maybe once at night for a while. When she was 3, she still nursed a lot, including NIP (and she looks a year older than her age). By 4, she still nursed during the day but less NIPing except after preschool. By 5 she started slowing down on nursing and went to pretty much just morning and night with an occasional daytime nursing session. By 5.5 she started skipping days sometimes, but usually nursed for a minute or two at night. Then I thought she was completely done (I'm sure I'm out of milk) by the time she was 6. She is now 6 years, 4 months and wanted to nurse last night for a couple minutes even though she has had "milkies" in a couple of months.