Your W is doing to you what mine did to me before BD. My EXWW started treating me horribly bad. She was telling me things like "you are a horrible man, you are a horrible husband, you are a horrible father". She told me things like "you have a really low bar for yourself". She was pushing me away. That is what seems to be happening in your situation.
My EXWW was ramping up her PA with OM during this time. Nothing I said or did stopped her from treating me this way. Every single interaction was her berating me and mistreating me. The best thing I could do was just ignore her. Legit no contact. The only thing that I spoke with her about was the kids schedule and asking her what bills I needed to pay.
Its time for you to pull away. Give her what she wants. Show her that you value your time and energy more than she does.
M:16 T:21 H(me) 38 WW: 38 S11 D16 D19 Red Flags of A: March 2018 ILYBNILWY: August 4, 2018 Moved out of MBR: September 24, 2018 BD/Confirmation of A: October 31, 2018 D Filed: March 27, 2019