Standardise before you automate
Automation magnifies whatever process it touches. If every client is handled differently, automating just produces inconsistency faster. Start by agreeing one way of doing each recurring task: the close stages, the review criteria, the report pack. Write it down and train to it.
Standardisation also makes work transferable. When every file follows the same structure, any bookkeeper can pick up any client during leave or busy periods. That flexibility is often worth as much as a full extra hire, because it removes bottlenecks around specific people.