Precautions on complementary foods for six-month-old babies Six months is when the baby starts to try complementary foods, but there are some issues that need to be paid attention to before adding complementary foods. First of all, the baby\’s neck and body should be able to be slightly supported, and the baby should not be completely relied on for feeding. Secondly, you can choose to make your own food supplements or buy canned food, but you should pay attention to check the shelf life and ingredients. Finally, when adding complementary foods for the first time, you need to start with a small amount and gradually increase it.