Hiya Type1newbie and welcome!
Unfortunately there is currently no cure for diabetes. Having said that, there are lifestyle changes that really help reduce the symptoms - mainly low-carb food in-take. However, if you went back to eating normally, your symptoms would return almost immediately - so not a cure.
I am really pleased for you that you are having such a success with your lifestyle changes. A couple of things that might be going on with you:
1. You were never Type 1 - just a misdiagnosed Type 2. Honestly, this is a very common situation. Personally, I was misdiagnosed as Type 2 when I'm actually Type 1. If you are actually Type 2 and make big changes to your diet, exercise regime and weight, you could minimise or even stop needing the medication. This could be permanent although any regression to your old ways would bring it back very quickly!
2. You have a similar condition to me. I have LADA (sometimes referred to as Type 1.5). LADA is a form of Type 1 diabetes, but it hasn't progressed to the full Type 1 yet. I still produce my own basal insulin at varying amounts on different days. When first diagnosed as diabetic, I cut the carbs right back and this gave my pancreas enough of a break to kickstart it again for a while. The same thing happened when I first went onto insulin. They often call this period the 'honeymoon period', but it does end eventually apparently! All LADA patients eventually end up on insulin.
Anyway, they are the only things I can think of to explain your situation, but you would be best to see your diabetes team and get them to run some tests to make sure you really are Type 1!
All the best
Smidge