I guess your main concern will be whether your child is getting enough calcium. If he is taking solids, you can try giving him food like cheese, yogurt, kales, broccoli, salmon, calcium fortified cereal, prunes etc which are other sources of calcium.
You can also refer to this article for more information on the calcium needs, as well as a full list of alternative sources of calcium (if this is indeed your concern):
http://homemade-baby-food-recipes.com/calcium-sources-for-your-baby/
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