How can I lower my hba1c levels in a week?

? Can you safely get your waist size to be half your height in a week? One week is impossible. First of all, no significant changes are seen for 3-4 mos at a time. No sense in checking it sooner. Secondly, please learn about your condition. Seems you really don't know what u r dealing with.
Probably not. A hba1c test will show how well (or poorly) glucose control has been over the last few months. Changes in a week will probably have no effect on the result.