@mab1402 My HBa1c is 34 right now and it's usually between 32-34. My endo doesn't care because my TIR is excellent. She never says anything bad, that I'm doing great!
You consistently hear of doctors saying a persons HBa1c is too low. But it depends on the doctor, what they know and I guess what they care about. In the US most, but not all, endos are judging the A1c with the TIR of type 1's. The problem with just an A1c is how you get there. If you take a 4 and an 6, you end up with an average of 5, but if you have a 2 and an 8 you still end up with a 5. So it depends how you get to that average. Peaks and valleys or rolling hills. The rolling hills are a much healthier way to achieve that 5 average.
They actually really care about the low percentage the most. They don't want it above 4% low and preferably under 3% lows. I've actually had a 30 HBa1c, and not one word against it. But I stay around a 96-98% TIR with 1-2% lows.
So does he have a CGM? If he doesn't, he might try to get one. It gives a good picture of how he's getting to his numbers. If he has one, how is his lows? Or it could be a doctor that's old school and doesn't like Hba1c's that are in the 5's or lower 5's. A lot of us here got flack about low HBa1c's until they understood that the CGM's were telling them you didn't have to have lows to get there. Now I get told by my various doctors that I'm doing great!