@Gokul R Dev, Thanks for posting in Q&A. After going through the properties of Dynamic membership rules, I didn't find a property can filter the newly enrolled device. But only filter the enrolled devices by using enrollmentProfileName. Here is a link with more details:
If you want to filter the newly enrolled device, I think the device attribute like enrolled time needs to be added into the dynamic membership rule. You can feedback to AAD uservoice to see if it can be added in the future.
https://feedback.azure.com/d365community/forum/22920db1-ad25-ec11-b6e6-000d3a4f0789
Thanks for your understanding.
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