My bloods run low, but even I would be uncomfortable about a score so low. Did you confirm the number by retesting?
I've done lots of reading about low numbers, for non-medicated folks, and, if I recall accurately, you're at the threshold of dangerous at 2.6. Annoyingly, I can't find the link I was reading.
If your list of meds in your signature is up to date and you are still taking Gliclazide, then I think a conversation with your nurse/doc might be in order? When is your next review due?
I don't take any medication, so I c ant be any more helpful than trying to apply a bit of logic.