That's a great idea and the viewpoint shift would not only work well but support the story.
But to give a more general answer: When you write, trust your gut.
I believe that stories aren't constructed but conceived. They grow in your unconscious and emerge from there. As Ursula Le Guin said: A story is a found thing. Only, you find it in yourself instead of outside. Your story has a logic that derives from the internal structure of your being and reflects who you are. Your story is true to you, and you can trust it.
So whenever you find that something does not work in your writing, for example, when your beta readers agree that some part of your narrative didn't work for them, don't delete what didn't work. Make it work.
In your case, if you find or someone told you that the viewpoint switch didn't work, don't abandon that switch but try to understand why it didn't work and amend that. Because often it is not that an element of your narrative is wrong, but that you didn't yet know how to make it work.
For example, often twists appear out of the blue to the reader because the writer forgot to foreshadow it, not because there should have been no twist. Or if characters behaves in an unbelievable way, it usually doesn't mean that they should behave differently, but that the writer hasn't developed the character for the reader properly.
But making it work isn't always the solution of course. Sometimes something you wrote just feels wrong. And it's not always where you think the problem is that feels wrong.
I a recent novel I wrote I had a character that I thought I had written well and a jarring plot hole I didn't know how to fill. After some feedback and a few weeks away from the text, I realized that what felt wrong to me was the character. I had changed her from my original conception to something I thought fit the target audience better, but I no longer had a connection to that character. So I rewrote her, thinking I would then attack the problem as a second problem, but to my surprise changing the character back to my original intuition made her behave in a slightly different way and dissolved the plot hole.
Just as you should trust your gut about what is right, if your gut tells you that something in your story is wrong, trust your gut.
Use your rational mind to make your story work, but follow your intuition or instinct or gut, when you develop your story.