Most QuickBooks problems aren't data problems. They're structure problems.
You can enter every transaction correctly and still end up with reports that don't reflect how your business actually runs. That's a chart-of-accounts issue, not a discipline issue.
Categories that match how your business actually earns and spends. Service income separated from product sales, project work from retainers, instead of a generic list somebody accepted at setup.
We start with a review. I go through the existing chart of accounts and categorization habits to find what's duplicated, what's miscategorized, and what's quietly distorting your numbers every month.