Dh lowered his A1c out of the pre-diabeties range through diet changes....Trying to help hubby with his A1c. Every little bit helps.
The main things we did were spacing his meals out and applying glycemic index considerations.
He used to rarely ate breakfast, had a small lunch, and got most calories at dinner. The Dr said that put a lot of stress on the pancreas.
Lowering glycemic index is things like eating the orange or apple rather than drinking the juice of it, eating old fashioned oats instead of quick oats - steel cut oats are even better. Whole wheat bread instead of white bread. Honey or maple syrup is better than molasses is better than sugar is better than high fructose corn syrup.
Sugar Solutions cookbook was helpful. And every recipe I've tried has been considered delicious by everyone I've shared it with.