Hi, it quite possible to do with a good low carb high(er) fat diet and a bit of dedication and will power. When I was first diagnosed my HbA1c was around 60-61 (couple of pre diagnosis tests), and I'd reduced this to 47 within the first 3 months. and it's down in the low 40s since then. I am on metformin, but my diet has been the main reason for my reduction both in glucose levels and in weight. You don't have quite so far to go, so I've no doubt you'll be able to manage a big improvement before your next check up too.
Robbity