I was diagnosed T2 about a year ago and was put on Metformin which made me ill. So I decided on a LCHF diet and am very strict with it. My readings are around 6 on hbA1c I feel fine, exercise regularly and still have an active job despite my age...just 73. However, despite this regime I cannot lose weight. Could this be contributed to heart medication which I have been on for 20yrs?
You could check drugs.com for some added information about your hearth medication as @catherinecherub suggested. It does get a bit harder to lose weight when older.