After about 9 days one morning the right ear completely resolved and the left ear was at about a 5/10.
Very, very, very long story short, I did a ton of digging and experimenting and realized it was related to a neck injury (a lot of people with whiplash have short-long term tinnitus). Over a year of physical therapy later, the tinnitus in the left ear is usually gone and only flares up if I lift weights with poor form.
If you've had a neck/shoulder injury in the past 1-2 years, it's something I'd look into.