I watched this movie today actually.
A few words of warning, it can be VERY triggering. So please, if you are at a time right now where it would not be a good idea to trigger dysphoria please don't watch this

A few good things to say though is that even though there is not much dialogue in this film, the children do a great job of showing their emotions. (and it's in french, but I have never minded subtitles)
Laure/Michael is amazing and even when they do not speak their face says a 1000 times more of what they are feeling or thinking. A lot of the things that happen will be very familiar to you and will likely make you sad, so take caution. I was not too happy with the ending but that is my opinion.
There is a scene where Laure/Michael's mom slaps their face...and I felt as if it were my own face being slapped. There are a lot of tense scenes in the movie but it is balanced out with some happy moments.