How to change Metamask Account from relevant account
Firstly you need to disconnect current metamask account from Relevant account
Let me explain
You can follow following steps
1. Login your metamask account
2. Click on the 'connected' (who place at absolutely below the metamask symbol and left side of upper corner)
3. New page will open , you can see your all accounts connect to the metamask choose the relevant account
4. Click on the three dot of relevant account and click the 'disconnect this account'
5 . Now goto relevant account and refresh the page. you can see that your metamask account must have been removed from relevant
Your account is ready to connect new metamask account.
Now you can connect new metamask account as before.