Documentation is not my cup of tea. If you are a project manager and think like this, you are going to have a bad time after some time. Team management, task tracking, milestones, risk assessment, and project management is all what you need to manage all the time.
If you don’t have a proper way of recording your tasks, backlogs, target dates, tasks assigned to various team members, alarm and alert system etc. in place, then you are at high risk.