Fix the handoff slowing the whole operation. Each phase ends at a decision point, and the duration and fee are set for your engagement.
Understand the current process, relevant records, system boundaries and intended outcome. Agree the implementation scope, dependencies and acceptance criteria.
Implement the agreed configuration, software, interfaces or modules. Releases, testing responsibilities, access and outstanding decisions stay visible.
Agree the support arrangement or a documented transfer: the receiving owner, supported components, access, documentation and remaining issues.