My son hasn’t really done much mimicry so far. He will wave sometimes if you wave. He’ll be 7 months soon but just starting to copy us dancing 😍! This stage is so fun. One of his toys has an ABC song on it that he loves and his father and I started dancing to it because he’d shuffle his legs while sitting when it came on like he wanted to dance. We just did a simple dance, put our hands in the air, but he followed and got his hands about halfway up. A little awkwardly but you could tell he was trying to mimic!