Infants! Share Your Gameplay and Discoveries (New Thread In General Discussion)

Hi this is my first post. I downloaded the infant update and love it. I aged up the sim newborn and now the infant already knows how to crawl. I want to get the growing together expansion pack but am wondering how it will work with an infant that's already crawling, will the milestone learning to crawl already be there?. On hindsight I should have left him as a newborn so he could learn to crawl with the expansion. What are your thoughts on this?