Depends on your A1C and what your doc feels is best for you.
Short answer is yes, some people can come off of insulin if it was prescribed when they were first diagnosed and it was used because their sugars were way out of range. If you made lifestyle changes (diet, exercise, weight loss) you may be able to get by with oral meds only.
If you "worked your way up" to insulin over a number of years after initially taking oral meds (or no meds), then the answer is "probably" no.
But only you and your Doc can figure if "you" can come off of it.
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As a dialysis nurse, I have seen people once they get on dialysis at times no longer need their diabetic medications or they are decreased by a lot, as the process of dialysis also removes sugar from the blood. So I presume if people are able to better control their sugar levels they might also be able to stop insulin as Graham explained above, but it depends if you started off on pills and progressed to insulin. Diabetes is a progressive disease. Sometimes as people age their diabetes requires them to stop taking insulin as they eat less, I had my Ex grandmother who in the last 2 years of her life was off all diabetic medications as she was not eating as much and got hypos too often, so there are situations where people can possibly get off insulin.