Acupuncture/FET questions

Hi everyone! I am doing a FET on 3/13. I have heard a lot about people pursuing acupuncture during fertility treatments, but don’t know much about it. I got three acupuncture treatments last year for back pain and enjoyed that. I have a good practitioner who I can go back to.

What I’m wondering is this: when and how frequently should I get acupuncture for this FET? Should I be doing it now, while my lining is beginning to grow? Right before the FET? Right afterward? Are here particular instructions I should give the acupuncturist? Any info would be helpful and appreciated! Thanks!