I did far more work than usual and now my product lead is going to expect this to happen every sprint. They'll be so disappointed.
Finish the tickets, but don't close the tickets ;)
Isn't this the standard practice? :)
I developed the habit to announce all changes in my service on Slack when deploying to production, even seemingly invisible ones, and that helps not to forget the tickets after writing the code. But team lead still finds some finished but unclosed ones on each backlog GC run.