the possibility of hypoglycemia in spite of taking metformin...

An interesting article about metformin> (part of which I have quoted below) gave a list of sympthoms. I've have had them if I exercised a lot or simply not eatten much. I hadn't expected hypoglycemia with type 2 diabetes and metformin:

Metformin does not usually cause hypoglycemia (low blood sugar). Nevertheless, hypoglycemia may occur in the treatment of
diabetes, as a result of skipped meals, excessive exercise, or alcohol consumption. Know the signs and symptoms of low blood sugar, which include hunger, headache, drowsiness, weakness, dizziness, a fast heartbeat, sweating, tremor, and nausea. Carry a non-dietetic candy or glucose tablets to treat episodes of low blood sugar.

However, I think the odds of me dropping into hypoglycemia are quite small so I don't think I'll start carrying "non-dietetic candy or
glucose tablets" quite yet.

I trust that I have properly "sourced" the quoted material above...