... get the project's deadlines under control

Depending on the maturity of your current project planning, I will set it up again together with a role defined by you for this purpose or optimize it within the project planning. In cases where major delays mean that most work packages no longer run according to plan, I carry out a rebaseline with workshop elements. Typically, there is a lack of a functioning and logical project structure, a simple and regular recording of the degree of progress and the definition of responsibility for work packages. But perhaps you are not really getting into the swing of things with agile methods such as release plans, roadmaps and sprint planning.