As said if you concerned you need to see your doctor...
You don't change from T2 to T1 diabetes as these are two diferent medical conditions...
But can happen though, is that an individual has a slow on set T1 or what often termed as MODY and when the see the doctor, the symptons and other factors such as age, weight etc are taken into consideration makes a T2 call (there a hell of lot more than T2 diabetics than there are T1)
But over time, it gets more difficult to control etc, and it realised that it's T1 of a form of..
There are tests that can been done c-piptide and GAD testing that can help to determin which type of diabetes...
As it's possible for a T2 diabetic to require insulin support if there resisdence isn't being controlled by oral medication...
In your case yes you could have slow on set T1, or you may be T2 that require a review of your medication etc or something completely different... And only your doctor can determin whats going on and what step to take next, but while waiting to see the doctor if your symptons become worse get yourself checked out at your local A&E