My professor told me to "find my academic voice" and I genuinely don't know what that means anymore

So I got my first draft back last week and the only comment in the margins was "find your academic voice" written in red pen, underlined twice. Cool. Super helpful. I've been staring at that phrase for 6 days now and I think it's actually broken something in my brain.

Like I understand what it means in theory? You're supposed to sound confident and smart but not robotic, formal but not stiff, authoritative but not arrogant. Easy. Totally fine. Except now every single sentence I write feels wrong. I'll type something like "this suggests that" and immediately think is that too weak? Then I switch to "this demonstrates" and it feels like I'm trying too hard. I deleted the same opening sentence four times yesterday.

The worst part is I used to just write and it was fine, not perfect but fine. Now I'm narrating myself while I write, like some weird internal commentator going "would an academic say it THIS way or THAT way." I genuinely paused for 11 minutes on the word "however." I timed it.

Has anyone actually figured out what their academic voice sounds like and how did you get there? Did you just read a ton of papers until something clicked, or did someone actually give you usefull feedback that made it make sense? Because right now my voice sounds like a nervous freshman trying to impress someone at a dinner party they weren't invited to.