Yes, it is generally safe and possible for a pregnant woman to continue breastfeeding her 1-year-old baby throughout the entire 9 months of pregnancy. However, there are some factors to consider. Breastfeeding during pregnancy is known as tandem nursing. It is important for the mother to consult with her healthcare provider to ensure that she and the baby are healthy enough to continue breastfeeding. Some women may experience discomfort or changes in milk supply during pregnancy, but this varies from person to person. The mother's body will prioritize the nutritional needs of both the growing fetus and the breastfeeding child, so it is still possible for both babies to receive adequate nutrition. It is also important for the mother to listen to her body and take care of herself by eating well, staying hydrated, getting enough rest, and seeking support if needed. Ultimately, whether or not a pregnant woman continues breastfeeding her older child is a personal decision based on individual circumstances and preferences.