Josieann, I’m confused about that too. It’s been reported that he wants to come over for his grandfather’s memorial service. If true, I can’t see why he couldn’t stay with his father. Having said that, obviously we don’t know what kind of terms they’re on at the moment, but I do understand that he’d want to be at the service for his grandfather.
The jubilee is going to be celebrated much later, in June I believe, and so it would be a long wait from the memorial service until the jubilee. We don’t know if the family would want them to be present for that, but I wouldn’t blame them if they would prefer them to stay away at that time. Also Harry has reportedly said he wants to introduce his new baby to the family and for them to see Archie again. Who knows? But as others have said, it would be straightforward enough to do that at any time, and to stay under the radar.