Yes I know a woman with 4 kids who let's her 3 boys and 1 girl nurse till they decide they want to quit. She has an 11 yr old son who still suckles 2 to 3 times a day and a 9 yr old daughter that nurses once a day. The others are 7 and 4. They all still suckle. She says no matter what age they are if they want to suckle from her she will let them.