Most women set goals for breastfeeding of between three months and a year. Though in many parts of the world, it’s usual to breastfeed for two years or even longer. How long you keep breastfeeding for is your decision.It will depend on how you feel emotionally, as well as your personal circumstances. Whatever you decide, try to give your baby nothing but breastmilk until she’s six months old (exclusive breastfeeding).ost women set goals for breastfeeding of between three months and a year. Though in many parts of the world, it’s usual to breastfeed for two years or even longer. How long you keep breastfeeding for is your decision.