Change to Permalinks

Hi There,

I have changed the permalink on my site from
https://londonetparis.com/2022/02/20/sample-post/
to
https://londonetparis.com/sample-post/

I have tried to create a redirect using several combinations but none seem to work. These are the three attempts, could you offer any guidance?

/%year%/%monthnum%/y%/%postname%/
/%postname%/

/^/\d{4}/\d{2}/\d{2}/(.*)
/$1

/blog/%year%/%monthnum%/y%/%postname%/
/%postname%/

Thanks
Chris

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