I need help with the title of a movie from the 70s or 80s
My sister and I are trying really hard to find out the name of a movie we watched as kids. I think it was made in the 70s or 80s. The movie is about two sisters who get lost in a forest somehow. It's live-action and animation and very surreal. It begins with the sisters playing in a field, and they are drawn to a creek where they find a frog who they begin to follow to the forest. Father Time has cast a spell that makes the forest winter forever, and the girls are in search of Mother Nature (or Mother Earth?) to bring the four seasons back to the forest. In the end, they wake up and realize it was a dream, and the actors who play Mother Nature and Father Time turn out to be their parents. We have been trying to remember the name of this movie for years now. If you remember it and can even just acknowledge that it exists, we would be grateful! If you know the name of it, we will be eternally grateful and this mystery that has been haunting us can finally be laid to rest. Thank you.