If you're still eating low carb and taking meds I'm not surprised.. I can get to those levels when fasting for a couple/3 days.
Might be worth reducing the meds/stopping them totally and see what happens? (Check with the doc or DN of course!).
Have you thought of trying a further carb reduction? Not sure what your usual intake is but might be worth a try.
Also have you thought of some therapeutic fasting?
Update no.2 : had appointment (telephone) with DN - out with Sukkarto back with Metformin (Hurrah) and Forxiga down to 5mg with option to drop if, as I suspect, the Metformin returns the control which had ebbed away with the Sukkarto. New meter to ensure that it is not my current meter showing erroneous hypo levels.
I feel listened to and supported - well done DN.