CarPlay switching sources automatically

So clearly this is an Apple issue going on for years with NO fixes. The most recent question about it was a while ago therefore I am starting it again.

I really hope there is a fix…

Picture this: I am listen to the radio (local or XM). If my phone is connected to CarPlay and I open up an app (any social media app, news apps and even my camera app, among others), it immediately switches audio sources to my phone away from the radio.

I do NOT want this to happen.

Anyone know of a fix?

This did not happen in my 2018 Nissan. And it did not happen in my 2024 Toyota until about two months after I bought it.

and I have also upgraded my phone since it started to an iPhone 15.

I have tried going in to shut off Bluetooth to those apps that cause it but there is no option to do that. I have reached out to both Apple and Toyota.

Any help would be greatly appreciated!!!

Jen