Since this is not my area of expertise, I searched Google under the key words "infant nutrition" to get these possible sources:
You can use the other age levels and pregnancy to do similar searches. you might try including "powerpoint" as one of your key words in your searches.
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
From this data, if you don't find powerpoint presentations, you should have enough information to construct your own powerpoint presentation.
I hope this helps. Thanks for asking.