All of my children have started solids are different ages. The earliest was at 8 months, the lastest at 16 months. My children were/are fine! Even my child who was very reluctant to eat solids, and was about getting about 60-70% of his caloric intake from mama's milk at 2, grew and is a very healthy little guy today. As long as you are able to keep up your supply, your bm will meet the nutritional needs.