Do I need to confirm with my GM after handing in my two weeks notice?

Worked at mcdonald's for a few months. I told my gm that I was putting in my two weeks a couple months ago. He told me to write it down and put in on his desk. I changed mind and stayed. I decided to put in my two weeks a couple days ago. I wrote down that it was my two weeks. My last day, and thanked them for the opportunity. I handed to him, and told him sorry. I saw him reading it while he walked into his office. Even if I didn't see him reading it, I would assume he read it. Should i just work my two weeks and not show up, or should I confirm with him?

Do I need to confirm with my GM after handing in my two weeks notice?
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