I don't think the nutrients would be a problem for the babies. I've been told to drink Ensure every day and that has a ton more nutrients than formula. Actually, drinking Ensure every day is the only way I can keep up with my nutrient needs!

Thanks for the advice though I've decided not to, simply because ... it doesn't seem like it'll have the effect I'm hoping for. I am glad to hear that not many babies dislike formula. That puts my mind at ease a bit!