Trial Pipelle / Acupuncture before FET

Hey everyone, I’m not ready for my FET yet because I’m doing one last ER to hopefully get another euploid before moving on to transfer. I took a quick photo of my RE’s notes and saw “trial pipelle” and “PC6.” I’m wondering when a trial pipelle is usually done before an FET, and PC6 should refer to the acupuncture point. When do people typically start acupuncture before their FET?

My RE didn’t explain the plan since I told him I wanted to do another ER first, so I’m trying to understand the timeline. Would appreciate any advice!