Hello, I Have Issues With My Glasses Since I Got

Hello,
I have issues with my glasses since I got diagnosed with astigmatism.
I wear glasses for 32 years - 27 years of that time in Germany and I never got diagnosed with astigmatism and never, ever had any issues with my glasses. I could exchange different pairs and would adjust within minutes.
Now I live in Canada and got diagnosed with astigmatism ... I have 4 pairs of glasses (same prescription) and when I go from my standard glasses to sunglasses, it takes hours to adjust ... and still feels weird.

Getting dizzy from time to time ... My eye-doctor says, everything is okay.
Can someone give me some good advice please?

Thanks

Chris