@Sajith Gopalakrishnan Hema
It may be caused by the Multi-Factor refresh token lifetime.
You could refer following articles to configure token lifetimes in the Microsoft identity platform. If you have more questions about Multi-Factor refresh token lifetime, I suggest you ask in the Q&A forum with azure-active-directory tag.
Configurable token lifetimes in the Microsoft identity platform
Configure token lifetime policies
Configure authentication session management with Conditional Access
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