Is there other way in order for user to adjust/complete forecast without using the override page

Summary:

Users are making changes by adding overrides in Contract Billing Schedules as a workaround in order to finish their project forecasts.
Right now, the system connects forecasting and billing . When someone changes the billing schedule for forecasting, it also changes the actual invoices, which can cause mistakes or mismatches.
Is there other way in order for user to adjust/complete forecast without using the override page.

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Version (include the version you are using, if applicable):

25D (11.13.25.10.0)

Code Snippet (add any code snippets that support your topic, if applicable):