That was the story told in last year's Goodbye Christopher Robin.
I don't really blame Christopher's attitude, if the movie is close to the truth. It seems like his father kind of exploited him at the time in the name of publicity. Imagine everywhere you go and everyone you meet all the time...
EW gives it a B-
http://ew.com/movies/2018/08/02/christopher-robin-review/
Variety seems to like it even less, and makes the Hook comparision:
https://variety.com/2018/film/reviews/christopher-robin-review-winnie-the-pooh-disney-1202893858-1202893858/