Goodbye Christopher Robin (2017) on Netflix

Plot summary

Alan Milne, known to family and friends as Blue, comes home to England after the Battle of the Somme and lives with shell shock and flashbacks. He wants to write a treatise against war but cannot settle to his writing. He and his wife Daphne have a son, Christopher Robin Milne, whom they call Billy Moon; Daphne had hoped for a girl. They take on a nanny, Olive, and Billy calls her Nou. Blue moves the family to a country house with wooded land, and Daphne, who dislikes the change, goes back to London.