For most people who are type two or in danger of becoming so, controlling blood glucose is the way they reverse it.
Eating a low carb diet, reducing sugar and starch in the diet helps restore normality.
Foods which are low carb include meat, seafood, eggs and cheese, full fat yoghurt and it is usually possible to include low carb veges in salads and stirfries, and berries, the lowest carb content fruits.
Is there anything in that list which would trigger your asthma?