Would you ever want to get back inside your childhood? There are so many novels out there written by adults from a child's point of view. But none of them get inside it. How could they? Childhood is about a completely different way of seeing, may be one that has little to do with language, and articulation.
I'm re-reading Hiromi Goto's Chorus of Mushrooms. It isn't about childhood, but it is about getting inside an unoccupiable subjectivity. She writes in English, attempting to create the interior Japanese-language chatter of an old grandmother. And it works, because she doesn't strive for realist accuracy but shoots straight for a kind of poetic fantastic.