HI @AmadasaniS 
Either use Flow designer (Run daily trigger) or Scheduled Job to check the last updated date. If it's not updated in last 24 hours, then send an email notifictaion.
Try this and let us know if you stuck in the middle..
Regards,
Siva

Hello @AmadasaniS 

Please refer the below flow designer i hope this should work for this 

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Thank You!!

@AmadasaniS 

I would recommend to create a report or data visualization in PA Dashboard with dynamic conditions where you can check status is New or In Progress and Updated is 2 days older than today and send email notifications to client stakeholders

Below is for sample

If this helped to answer your query, please mark it helpful & accept the solution.

Thanks,

Bhuvan

@AmadasaniS 

Did you get a chance to review this as I believe the information provided should answer your question and would be the most simple way to fulfil your requirements.

As per community guidelines, you can accept more than one answer as accepted solution. If my response helped to answer your query, please mark it helpful & accept the solution.

Thanks,

Bhuvan