Hello Markus,
also sorry to hear this but after reading some texts and a book i take it Skyird and the others are right. Just have a talk with your doctor and maybe let you advise some lectures to listen to. If the spikes are not excessive there is a very good chance to live without even taking pills like Metformin and such.
Apart from this ketogene "diet" (you really do not have to suffer when taking this way)
movement is very good for you, as is getting your weight to a reasonable number (no idea if this is even necessary).
Exercising (which i hate lol) or just moving your body brings down any sugar/carbohydrate spike instantly. So if you like wandering, bicycling or just strolling a bit helps immensely, it does not have to be for a long time.
I understand you read german, so here is a quite good link (there are thousands of others of course)
https://eatsmarter.de/abnehmen/diaeten/ketogene-diaet
All the best! Keep your head up
