Yes, you can, newbytoo.

Turning off the Auto-add feature will prevent the system from automatically categorizing your downloaded transactions in QuickBooks Online. 

Let me walk you through how:

1. Navigate the Banking menu and select the Rules tab.
2. Locate the rule and click Edit.
3. Scroll down and toggle under the Automatically confirm transactions this rule applies to option.
4. Click on Save.

With these steps, QuickBooks will no longer automatically categorize the transaction on that specific rule you've created.

Here's an article for more information about bank rules: How to Set and Use Banking Rules for downloaded transactions.

Also, once everything is set, you can now reconcile your account.

If you have other questions, you can post them again here. I'll be around to back you up.