Hi
@gabrielqx and welcome to the forums. I'm sorry you have this diagnosis.
I think that a 1-2 week wait is unfortunately pretty normal for these tests (at least in the UK where many of our members come from).
As for the reduction in insulin needs, new T1s often have a honeymoon period where their pancreases helpfully (or not so helpfully) produce more insulin after they have been started treatment, and as a result may need little injected insulin.
As for the MODY, I don't know much about it, but it's good that your doctor is considering it as a possibility from the start, so you'll get a proper diagnosis if you aren't T1. My guess is that if this is the case you'll have to have yet more blood tests to determine the MODY type, unfortunately.
High blood sugars do affect vision, so you may need to wait and see whether your vision goes back to the old normal after a few weeks? I certainly would wait before investing in new glasses. Though I've got to admit that it seems strange to me that your vision changed after starting insulin rather than before.... Have you had a chance to ask your doctors?
And the good news amidst the bad : modern technology has transformed diabetic care from 100 years ago (when insulin was first disovered), 50 years ago (when there were no glucometers), There are now insulin pumps, pens and continuous glucose monitors. The future is bright for today's newly diagnosed young diabetic.
Once again, welcome.