Will Colostrum take away a toddlers Appetite ?

My Son turned 19 months on the 23rd and for some reason he's eating very little. He's picking.. a few bites of this or a few nibbles of that. I noticed he's back to nursing more from 2 times a day to 5 or 6 . He's not sick or teething and no change in number 2's so not sure what's going on. any idea? I'm almost 32 weeks pregnant so I don't have anything other then colostrum

I would say it's not the colostrum per se, but just that he senses the changes coming and is trying to cling to being your baby. I've read it's a normal phase.