Yes, you can set up payment reminders for customer statements only using QuickBooks Desktop (QBDT), ODC1.
To ensure you only send reminders for statements and prevent QuickBooks from automatically sending invoices, you will need to verify your Scheduled Payment Reminders settings. Specifically, you must ensure that the option for Invoices is disabled or toggled off within those schedules. This configuration allows you to send customer statements without automatically generating and sending invoices.
Please see the photo below for your reference:

You can check out this article for detailed information about sending customer statement reminders in QuickBooks Desktop: Create automated payment reminders for invoices and statements.
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