How to Deal with Timeline Crunch request

1. Understand the request. - for eg, finish 5 days of execution in 2 days
2. Run it through the team and estimate the efforts required.
1. note if extra resources would be required
2. note if extra time would be required.
3. take the requirement to the PM. if not approved take to the leadership.
4. if that is not approved, discuss with the team about the critical scenarios and high priority tests; involve architecture and business teams for approval on the decision. 
1. not testing less important scenarios (if any)
2. not performing any particular type of test(if any)
5. Document the conditions and get the approval from leadership.
6. Document the risks. update the test plan, publish the impact and risks to all the project stakeholders.