Constant changing in dosage...

Well, we just got out of the hospital after my girlfriend was in, yet again, five days for DKA. Nothing new here, but we are conflicted on what to do...

Every single visit, typically on the last day, the hospital's Endocrinologist comes in and changes up her dosage...

Example:

Normal: 2units for every 50mg/dL over 150mg/dL Change: 1unit for every 50mg/dL over 150mg/dL

Normal: 30units of Lantus once in the morning Change: 25units of Lantus once in the morning

Normal: 1unit for 10g of carbs Change: 1unit for 15g of carbs

I understand they are trying to lower her insulin intake, but this ultimately affects her, average, high blood sugars. Now, she isn't good at keeping her blood sugar stable, but the lower we go the less effective. We are now down to:

1unit for every 50mg/dL over 150mg/dL 20units of Lantus once a day And 1unit for 15g of carbs

She never speaks up about anything, and I've had enough. I'm gonna say something, if and when, we go next. Any suggestions? Should we go back to her normal dosage and slowly taper down?