Tongue Lesions then soreness

I cannot determine the offending cause of this current chronic soreness on the dorsal (top) surface of the tongue near the midline groove. This started out with visible lesions/ulcers on and around the tip of the tongue 6 weeks back. I would usually associate the sores with the irritant SLS in my toothpaste, but this time, the sores took 3 weeks to subside even though I had switched to a SLS-free toothpaste right away. I was then treated with an antiviral (acyclovir) for about 10 days and noticed no change. Bacterial culture results were negative as were labs for autoimmune diseases. I don't believe a fungal culture was run, however, there are no visible signs of thrush (i.e. white patches). I also had no striae that is common with oral lichen planus. The lesions abated, but the soreness continued.

The oral surgeon diagnosed this as glossitis [https://en.wikipedia.org/wiki/Glossitis]
I was concerned it could be BMS [https://en.wikipedia.org/wiki/Burning_mouth_syndrome], however, by definition, BMS has no signs (i.e. lesions) which I displayed at the onset. I am very health conscious, have taken a plethora of supplements for years and a few meds (blood pressure/thyroid) and never had issues, eat all organic, no processed food, & exercise regularly. I am unable to tell if any food, supplement or med causes or even worsens the soreness as it just hangs. It's not a burning or throbbing soreness, but rather just tender when touched or when I flex my tongue. There are no visible sign or redness or swelling at this point.

All input appreciated as to possible causes and treatment.