You are getting good advice here KT.
Only do separation for YOU.
Could you verify if legal sep actually avoids the 5-year deadline?

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That is what my W is always doing. "Can you do this for our D? How is our D doing? Can you tell her I love her? Do you want me to get groceries for her? Can I drop her off her scooter/toys for her to use?" etc. etc. etc.

In regards to this, I would only answer "How is D doing?" and answer it later.
All the other she can do on her time with the child or on FaceTime.

Me: 34
Stbxw: 30
D:5 D:3
Mini bd: May/June 2019
Married: Aug 2019
BD: 6th Dec 2019
OM Confirmed: Feb 2020
March 2020: I filed for D
Waiting for D to be finalized and W to move out end of January 2021