[streetcat1]

So I am not sure what is your domain and what are your core uses cases. Derisking from the technical side for a typical web app is :

1) Is the API defined (if any) and implemented. Do you understand the domain entities. Do you need any outside knowledge to understand it.

2) Is the basic architecture standing? For example, division to micro services, GRPC interface between micro services.

3) Are the core 1-2 use cases implemented end to end ("tracing bullet"). I.e. from some sort of UI up to record in a database.

4) If you have any propriety algorithm, is it implemented.

5) If you have any propriety data (e.g. real estate listing), do you have the data and understand how to get it.

So if the functionality left is trivial (e.g. CRUD) than they can do it without you, hence they have the leverage.