No, it'll be longer than that, and somebody will probably try to keep it in the news for a bit. When/if they catch the shooter, then it will start to die down.
Which takes me back to this - after watching the available videos a few times..
Given that the tent/canopy he was sitting under was not very tall and where he was located, that was a somewhat of a flatter trajectory than I originally thought - don't get me wrong, there was definitely some elevation there (and the campus has some dips and elevations around there, plus the building), but not as much as I would have thought to get in under the tent. And I definitely think they were shooting center mass and the elevation/angle of Kirk (and slight movement, there was some) meant it hit his neck.
Edit: Just saw the video from the side view - he might have had a higher elevation than I thought. If he shot from the side, a more difficult shot, but he was shooting at his torso.
The video of the shooter seems odd, because for somebody who pulled this off, it doesn't seem like they would have exposed themselves to potential discovery. Unless he was sure of himself and had rehearsed it and got in place and fired in literal seconds and then took off. The fact that they got away on a somewhat crowded campus meant they were probably moving while Kirk was still starting to fall over.
They better catch the guy. There's no way somebody like that is going to have a list with only Charlie Kirk's name on it.
I'm hating FB and all of the bullshit conspiracy theories about shadowy groups. This dude had to be a lone wolf, because the more people involved, the more likely somebody panics or fucks up.