Probably not much. All KPIs are heading down now anyways, just look into the RKI dashboard [1]. Doing a quick math exercise underscores this: 70% are vaccinated, 6 million had it (at least, the number is probably higher), so in total 80-85% of the population already had it or is vaccinated by now. Numbers should go down now from now, which they actually start to do, if you look in the dashboard.
[1] https://www.rki.de/DE/Content/InfAZ/N/Neuartiges_Coronavirus...