iPhone video recording randomly turns off when screen mirroring - help please!

I am trying to record a talking head video of myself with my iphone 14 pro's back camera. In order to be able to see how I look in the recording (to see if I'm in the frame, that the camera is level, etc), I'm screen mirroring to my macbook.

The problem is, when I do this, the screen mirroring randomly shuts off several minutes into the video. And when the screen mirroring shuts off, the video recording on my phone also stops. This has happened twice now. Since I'm not constantly looking at my macbook screen, I usually don't realize the recording has stopped, so I waste tons of time creating the video when it's no longer recording.

Is there any way to prevent this from happening? Could it be caused by notifications or something popping up on my Mac that is somehow triggering the screen mirror and video recording to end?

Thanks so much!