⟩ As a project manager how you can deliver the product in less time means as soon as possible?
simple solution is Keep away your team from non-value adding tasks
Customers need working product not documentation. Project managers need to relieve the project team from as much compliance work as possible, even if that means taking on the tasks themselves. So that the development team can concentrate on the real work.
Agile frameworks do need minimal documentation and a mechanism to convey knowledge about project success and failure to others in the organization. The answer isn't eliminating either documentation or process, but approaching both from a simplified, lean, barely sufficient, just-enough perspective.