S.C.
Do some research on cow's milk. There is a lot of information out there about how unhealthy it actually is. There are plenty of other ways to get calcium. Like others have said, try goat's milk, almond milk, hemp milk, but NOT soy milk!!!! Soy is only digestible in humnas wn it is fermented (tofu, tempe, miso, etc). I would thoroughly research ANy soy products before giving them to my child and to myself. We avoid them alltogether once I learned the truth about soy. Good for you for breatfeeding for this long!! Awesome job! Really kids just need water for hydration.