We are only able to control insulin resistance but not cure it ! Is this true or false statement

I am officially diagnosed with insulin resistance My dr said that i will only be able to improve my health by strict to a healthy lifestyle and whenever i will try to be like the normal people who eat everything without restrictions I will not be able because the insulin resistance would return quickly.

To him this is not reversible or curable only improvement

I really thought if i lost weight my insulin resistance will be cures and i can return to my normal lifestyle that at least have some carbs on it like enjoying a slice of bread or eating rice in moderation but it seems that not possible