h, chia pudding, fclo, even just an omega 3 supplement will help. Green smoothies, coconut milk, nettle tea, protein supplements - and lots of superfoods can also help nutrition-wise. Since the digestive system isn't finished forming until age 6-7, children also receive the most viable nutrients through liquid, so if breastmilk is no longer available, just keep that in mind, and try to plan some sort of liquid nourishment. Nature/God planned on humans being breastfed for the first 5-7 years, so if they are not, its best health-wise to somehow make up for it to the best of your ability.