I can’t for the life of me remember and it’s droving me insane. I have this vague recollection of this movie. It’s a live-action movie from the 90s/2000s.
A kid has recently divorced parents. He finds a portal to another world (lion, witch, and wardrobe kind of deal). He finds creatures there.
At one point the creatures are behind glass reaching out to him while he tries to free him. There was also some kind of little green creature about the same size as the kid.
It’s not any of the NeverEnding Story movies.
This probably wasn’t some big movie. Quite possibly a direct to video or something like that.