Can someone please double check my backend workflow schedule a workflow delete data

Hi
thank you so much. I understand I made it needlesly complicated. But the last sentence I don’t understand. “Then you schedule that backend workflow from wherever you created the property in the first place, scheduled for 60days time.”
Where do I place " current date+ 60 days"?
Sorry if I ask stupid questions, I’m slow with this kind of things.
do I have to add this last step? Is this ok?
Thank you so much in advance.
Kind regards
grtz