Hey Marylou, if it ain't broke, don't fix it!! I clusterfed for a lot longer and it worked just fine for us. I'm not sure why Tracy suggests clusterfeeding only to 8 weeks, but if you are fine with cluster feeding longer and it works for you, keep doing it! I think Stephen was several months old before I quit....I think it was around the time he started solids, but maybe a little later than that even.