I am 18 weeks pregnant and nursing my 16 month old. I noticed a couple of weeks ago that there is no more milk. My last pregnancy, my nursling was well over 2 yo so I didn't worry about the lack of milk, but I'm a little worried that at his age he still needs the fats, etc. So I've offered cow's milk several times, but he hates it. Is it strictly necessary? I'm hoping to at least have some colostrum for him, but that could be 10+ weeks away. If I just up his cheese/yogurt and healthy fat intake, is there any need for cow's milk?