Azure signin logs not sent to log analytics even after configuring diagnostics settings

I am unable to send the logs to the log analytics workspace in order to monitor the service principal sign in logs.

I have a service principal in azure. I want to send its signin logs to a log analytics workspace in order to monitor and later setup alerts on them. But when I follow these steps https://learn.microsoft.com/en-us/entra/identity/monitoring-health/howto-integrate-activity-logs-with-azure-monitor-logs I cannot see any logs in my log analytics workspace.

I can finally see the logs in the log analytics. Had to follow these steps only https://learn.microsoft.com/en-us/entra/identity/monitoring-health/howto-integrate-activity-logs-with-azure-monitor-logs but instead of 15 min I had to wait for ~2 hours for the logs to be visible.

Steps to direct service principal logs to the log analytics workspace. Prerequisites:

1. Have a log analytics workspace setup
2. Should have at least Security Administrator role assigned.

Steps, from the document:

1. Sign in to the Microsoft Entra admin center as at least a Security Administrator.
2. Browse to Identity > Monitoring & health > Diagnostic settings. You can also select Export Settings from either the Audit Logs or Sign-ins page.
3. Select + Add diagnostic setting to create a new integration or select Edit setting for an existing integration.
4. Enter a Diagnostic setting name. If you're editing an existing integration, you can't change the name.
5. Select the log categories that you want to stream. (In my case I had to select the ServicePrincipalSignInLogs category)
6. Under Destination Details select the Send to Log Analytics workspace check box.
7. Select the appropriate Subscription and Log Analytics workspace from the menus.
8. Select the Save button.

As per the doc, we should see the logs getting streamed in the workspace after about ~15 min but it might take longer as well.