@Rashid @BenjiReis @olivierlambert
I appreciate your patience and guidance throughout the process. I am pleased to inform you that I have successfully completed the task at hand. However, I encountered two issues along the way. Firstly, one of my SMB Storage was corrupted and was not disconnecting properly. Secondly, the system was stuck in a restart loop. After resolving the SMB storage problem, I was able to restart the system and successfully add the new host to the existing pool.
Thanks all.

@olivierlambert Thanks a lot.
The Max vCPU was larger than the Physical CPU. Now it migrates successfully.