Nuclear was always less than 15% of Germany's primary power consumption. Renewables something like 5%. We need to get to 100% carbon neutral. Whether we have to replace 80 or 100% with wind and solar shouldn't make that much of a difference.
I would also be okay with building some nuclear, put nuclear and renewables don't go very well together, and I believe it's much harder to build enough nuclear plants quickly enough to replace all fossil energy consumption than it is to build enough wind turbines.