Whether the test was fasting of not is unlikely to make much difference to the result and at the level you are the sooner you get going on the dietary changes the better but a word of caution is to reduce carbs slowly over a period of a few weeks, managing your glucose level is a marathon not a sprint to minimise issues with eyes and nerves.
It is not uncommon to be prescribed a statin as a diabetes diagnosis puts you in a higher risk category where they like the cholesterol to be below 4. What was your result?
Many do find lowering carbs naturally lowers cholesterol anyway.
A look at this link should give you some ideas for modifying your diet if you haven't already seen it.
https://lowcarbfreshwell.com/
If your combination of meds and diet do not prove effective then there are tests which can be done to help diagnose if you are Type 1.