There is lots of help on Jack Newman’s Site  for breastfeeding

“….Human milk changes during a feeding. One of the ways in which it changes is that the amount of fat increases as the baby drains more milk from the breast. If the mother automatically switches the baby from one breast to the other during the feed, before the baby has “finished” the first side, the baby may get a relatively low amount of fat during the feeding. This may result in the baby getting fewer calories, and thus feeding more frequently….”  

“….Do not time feedings. Mothers all over the world have breastfed babies successfully without being able to tell time. Breastfeeding problems are greatest in societies where everyone has a watch and least where no one has a watch….”

“…..Feed the baby before he is ravenous. Do not hold off the feeding by giving water (a breastfed baby does not need water even in very hot weather) or a pacifier. A ravenous baby will “attack” the breast and may cause a very active letdown reflex. Feed the baby as soon as he shows any sign of hunger…..”