The child must know the time allowed for viewing. And do not ask for more than the allotted time. You can offer him to draw, collect a designer, a diamond mosaic, puzzles. I also recently purchased a home planetarium. It’s not just a toy. She develops the child and gives him a lot of new information. I advise you to immediately take sega star projector discs to him https://astronomix.info/planetarium-discs.html