I am very skeptical of these kind og books, and I can tell you that I am pretty sure it is fake. Atle Ottesen Søvik, a Norwegian Lutheran theologian,* reviewed
Heaven is for Real (the book), and tore it apart, showing that it was full of inconsistencies, and that it flatly contradicted Scripture.
Here is a Norwegian article in which his review and views are presented (in another publication). Among the problems with the book is that many of the depictions in the book are very consistent with childish perceptions of Heaven, but not with Scripture. Colton Burpo (the kid in question) says that everybody has wings in heaven, that Jesus wears a crown with a pink diamond, and that the Holy Sprit is blue.
He furthermore states that he saw into the future, and saw the end times. In the vision in question, he is still a child, and sees his father fighting Satan with bow and arrow. There is just one big, big problem with that. The ‘visions’ happened in 2003, when Colton was 4 years old, and the book was published in 2010, when he was 11, and he is now 15. He is now longer a child, and the end times (with dad fighting the Devil) has not yet happened. And what’s worse is that he was hardly a child, or at the end of his years as a child, when the book was published!
The books was falsified when it went into print! I’m not saying that it didn’t ‘happen.’ It was probably a fever dream, combined with his images of Heaven (and his father’s ‘creative touch’).