It is usually best to feed the baby on demand and to forget anything about breastfeeding schedules. Most full term, healthy babies know best when they need to feed, how long and how much they need to feed. You can expect your baby to have in between six and eight feeds in 24 hours. Feed your baby as frequently and as long as he wants to, even at night. As your baby becomes older and more mature the feeding frequency might decrease.
Especially young babies tend to clusterfeed. That means the baby feeds frequently at certain times and much less at others. Typically these episodes of clusterfeeding take place in the late afternoon or early evening. Clusterfeeding does not indicate a lack of milk but is indeed a common feeding pattern in young babies.
Clusterfeeding should not be mixed up with growth spurts. If your baby suddenly wants to feed more often, this is called a growth spurt. Typically you can expect growth spurts when your baby is about two to three weeks, six weeks and three months. Just feed your baby more frequently for a couple of days and then the balance between supply and demand will be restored.