blockchain fork – I have a complete Bitcoin ABC node. How can I separate Bitcoin SV?

I have some BCH in a complete bitcoin ABC node, which is currently running 0.18.5. I want to get the corresponding Bitcoin SV without spending on both channels at the same time and losing the BSV. I am able to run a complete Bitcoin SV node, with the same wallet or a different wallet. Is it safe to spend these coins as is, or is there a special process to split them?

Unfortunately, I have not been able to find useful information online, other than "sending it to an exchange", which I really do not want to do. Even has no useful information and seems to pretend that nothing important has happened.