The most effective way to adjust to nursing is to feed as frequently as possible. A good schedule for a newborn is to start feeding every two hours. Most newborns will nurse for fifteen minutes, but some are speed nursers and only nurse actively for five minutes. Others go more slowly and will nurse for close to an hour. Let baby set the pace and go with the flow.
Frequent nursings have other benefits as well.
The more often a mother allows her baby to nurse, the less likely she is to become engorged. It also gives both mother and baby plenty of practice to get the hang of things. Frequent breastfeeding will also reduce a mother's tummy at a faster rate, as the uterus contracts with the stimulation of nursing and returns to its normal size more quickly. Breastmilk is produced on a supply and demand basis, so a mother that nurses more often will be signaling her breasts to keep producing milk. Long periods in between nursings will reduce the demand, and therefore the supply.