FirstLoveMovies

https://www.imdb.com/title/tt7291180/

Sapphire and Zoe are two little girls growing up together in the 1970s. Like other girls, they go to school, take dance classes and play together. But unlike others, they grapple with a family secret: their mother is bipolar, and the illness disrupts their lives.

When the mother loses her job, the daughters are forced to grow up early, taking on the role of caring for the person supposed to take care of them