turned on coal/oil…
Despite the internet's insistence to the contrary, Germany has not increased its power production from fossil fuels.
It is in fact at the lowest level of the past 30 years
https://www.cleanenergywire.org/factsheets/germanys-energy-consumption-and-power-mix-charts
You mean "Installed net power generation capacity"?
Because that measures how much could theoretically be produced, not how much is actually produced.
For actual production, you might want to look at the two graphs below.
Particularly the 4th one shows that gas peaked in 2000 and has not gone up during the nuclear phase-out.