Hello there, Nazmac.
Currently, QuickBooks Online doesn’t offer a "downgrade" option from your subscription plan, such as Simple Start, to a "ledger-only" account. However, QuickBooks provides a QuickBooks Ledger option, which is a reduced-cost solution that allows you to maintain access to your general ledger and records.
The QuickBooks Ledger version is designed primarily for accountants or users who need to view and manage a company’s financial records. It provides general ledger functionality without the additional features included in the full subscription plans.
You can explore more details about QuickBooks Ledger and change your subscription by visiting this link: QuickBooks Ledger
Feel free to leave any additional questions in the comments, and we’ll be happy to help.