Is this good routine or should I add something in it

Hi everyone, I recently found out that my HbA1c is 6.2%, and I’m trying to improve my blood sugar through diet and exercise. Currently, I have oats with some nuts and 2 eggs for breakfast, cucumber with 2 rotis and a small amount of rice for lunch, and brown rice with curry for dinner. I also play badminton for about 1 hour, around 4 days a week. I’m trying to be consistent with this lifestyle without making my diet unnecessarily restrictive. For those who have had a similar HbA1c level, how much were you able to lower it through diet and exercise alone? Is it realistic to bring HbA1c down from 6.2% to around 5.0–5.5%? I’d also appreciate any suggestions on what I could improve in my diet or exercise routine and would love to hear about your personal experiences.