How to turn off subvocalizing while reading

Let me start by saying I'm not trying to do this to be a speed reader. I spent the last 32 years of my life by reading without an inner monologue.

Idk how long it happened, but my inner monologue is loud as fuck now and I can't turn it off. I hate reading like this. It's making me never wanna read again, I refuse to accept it.

Has anyone been in a similar boat? I'm open to anything, even getting high to make it stop.