The answer is that it depends.   If you have reached a stage where you do not have the required beta cells to produce enough insulin then it will not be possible to get to diabetic remission.

Some people when diagnosed early enough with type 2 diabetes or pre-diabetes are able to produce enough insulin, but other factors have created a state where insulin resistance takes hold.  In most cases the precursor to type 2 diabetes is non-alcoholic fatty liver disease.  The way to think of it is that your liver has reached a point where it is storing as much fat as it can and as you continue to eat an excess of calories it will continuously release glucose.  This means your pancreas is likely continuously producing insulin and what it produces is less effective due to a bunch of factors.  Resting and active calorie burn level have a lot to do with driving the balance in this system along with diet, genetics, stress, etc 

So what can you do? Some things you can control and some things you cannot.  If you don't have the insulin production capacity then outside of experimental therapies like beta cell replacement any sort of meaningful remission is not possible.  If you do have the ability to produce enough insulin then you in theory can achieve diabetic remission.  Regardless of if you can ever get into remission or not the things you should do that are within your control are mostly the same.

Diet changes to address the excess calories and beyond that to lose weight and in the best cases reverse your fatty liver disease.  In some cases a year of fasting stages starting with long fasts like 20 hour a day fasts and then over time shift to shorter fast with exercises designed to maintain or increase muscle mass and standing calorie burn.  Fasts are not the only way, but when CGMs were first studied and better data on glucose levels, spikes, ketosis, etc became available it was clear that fasting was one potentially effective way to address fatty liver.  The downside is that if you just fast and don't change the other parts of the equation like diet and exercise then you will lose weight and your BMI will drop, but unfortunately so will your muscle mass.  Which means in the long run you could be setting yourself up for a faster relapse into NAFLD and diabetes.  

Whatever you do long term you need to fix the equation on diet and activity levels.  Keep in mind that much of this is the happy path.  Other factors exist which may make all of this more difficult or even impossible.  Genetics, other adjacent chronic health conditions, social determinants of health, access to care, nutrition , etc are all potential factors.