Construction delay -> Compensation?

Hello to all interested parties: The conversation with the head of the construction company has taken place, he offered to reduce the compensation for damages by 3 weeks (previously he always wanted to reduce it by 4 weeks) if we want to start with our own work during the construction period. We will probably do this as well, so that we can move in a bit faster, at least that is the hope. But he also hopes that they will make progress a bit faster than expected and possibly even be able to install tiles before Christmas... ([Estrich ist seit 2 Tagen drin]). Let's wait and see!