There are several methods that can help to mitigate the situation and complete the project without going over budget, which may include re-estimating the scope of the project. It means determining whether features or products in the project's scope can be canceled or delayed without affecting the project's goals. It is also helpful to find ways to minimize time and resource requirements while increasing productivity by automating project processes and workflow. Furthermore, it is important to review expenditure and resource utilization in order to identify if there are any cost overruns.
If there is no way to complete the project without going over budget, then the project manager can explore different sources of funding which may include seeking additional investment from stakeholders, applying for grants or project loans, or securing funding from outside sources. Project managers must provide a clear explanation of the need for more funding to stakeholders, emphasizing the importance of completing the project successfully and the potential consequences of failure to do so.