Hi there, @Sachin89.

Currently, the option to downgrade your QuickBooks Desktop Enterprise is unavailable. Since you don't want to cancel your subscription, I suggest contacting our QuickBooks Desktop Customer Care team. They have the tools to verify your account and check with them about downgrading the number of users in your subscription.

Here's how to contact them:

1. Go to the Help menu and select QuickBooks Desktop Help.
2. Click Contact Us.
3. Enter your concern, then select Continue.
4. Choose how you want to be assisted.
5. Follow the on-screen instruction.
6. Confirm the transaction.

For more information about managing your Account in QuickBooks, you can check out this article: Manage your QuickBooks Desktop subscriptions and services.

In case you want to back up your company data in QuickBooks, I recommend reviewing the steps in this article: Back up your QuickBooks Desktop company file.

I'll be here if you need anything else. Stays safe out there!