Breastfeeding is the natural way to feed your baby. The milk from your breasts is specially designed to meet the needs of your baby. Bottlefeeding is a convenient way to feed your baby, but it doesn't provide the same benefits as breast feeding. Bottlefeeding may provide some short-term benefits, like shorter breastfeeding time, but it can lead to long-term problems, like obesity.
If you're breastfeeding, make sure to get enough fluids and calories. You can give your baby formula if you need to, but make sure to give it only when your baby is hungry and not as a replacement for breast milk.