Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online

janakkhadka You get 90-days of enforcement pause granted per calendar year that you can use whenever and however you wish. So yes, you could create a pause for between now and end of 2023, and another pause using your 90-days for 2024 that'd take effect from Jan 1 to March 31st. 

Just to clarify though:

1. We haven't enabled this yet for Exchange 2013. We'll do that starting January 2nd, 2024. So you won't see your servers in the report until then, and they won't be throttled at all between now and the end of 2023. Nor will you be able to create an enforcement pause until we enable it for 2013 around Jan 2nd.
2. When we do enable it for Exchange 2013 you'll first get 30 days of reporting only mode - you'll see the servers in the Out-of-date Connecting On-premises Exchange Servers report in the EAC, but no throttling or blocking will take place for 30 days; so the earliest throttling for Exchange 2013 servers won't start until 30 days later, around Feb 1st.
3. To create a pause you'll use the Enforcement Pause link that will show up in the report when your connecting Exchange 2013 servers are detected (on/after Jan 2). When you create an enforcement pause it will take effect immediately, even if you're in "reporting only" mode during the first 30-day grace period. So I suggest you wait until around January 31st or Feb 1st, right before throttling starts, before creating an enforcement pause. That way you get 30-days reporting only plus the 90-days enforcement pause thereafter. Doing it this way you can get no throttling or blocking for nearly 4 months, until around April 30th. 

Hope that makes sense. Let me know if you need further clarification.